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There were no direct flights from Los Angeles, so Michael Scully took two planes and a ferry, then drove through upstate New York in the rain. Tired and hungry, he stopped at a convenience store for coffee and whatever he could find to eat.

When Scully finally arrived at the U.S. Olympic training center in Lake Placid, two racers greeted him at the top of the hill with a bobsled.

“Glad you could make it,” one of them said. “Now get in.”

The next minute or so ranked among Scully’s most terrifying experiences. Scrunched between the bobsledders, he whistled down an icy, twisting track at 70-plus mph, his body thrown from side to side, G-forces pressing on his shoulders.

“It just destroyed me,” he recalled. “Halfway down, I really didn’t know if I’d pass out.”

Extricating himself from the sled, a bit shaken, he had all the inspiration he needed.

Scully, 42, is a creative director at BMW Group DesignworksUSA in Newbury Park, Calif. After spending much of his life building race cars, he has devoted the last two years to improving U.S. medal hopes at the Sochi Olympics.

The frightening ride with American pilot Steven Holcomb and brakeman Curt Tomasevicz represented a first step.

“That, for me, was jumping into the deep end,” Scully said. “It’s important to understand context.”

The designer wanted to create a better bobsled.

Scully’s involvement with the bobsled team began in 2011, not long after BMW became a sponsor for the U.S. Olympic Committee and several national sports federations. Though the agreement involved financial support, the German automaker also offered its expertise. That sounded great to American sliders competing against European sleds built by Ferrari and McLaren.

“You’re looking to gain hundredths of a second,” Holcomb said. “That’s all it takes to win.”

Working in a bright, modern studio just north of Los Angeles — hundreds of miles from the nearest bobsled track — Scully began with rough pencil sketches. Inspiration struck at odd times.

“I don’t sleep well,” he said. “I have my clearest realizations when I’m having one of those middle-of-the-night episodes.”

Early attempts focused on creating a sleeker profile with a lower center of gravity, deviating from the traditional bullet-nosed shape. He had to be mindful of international bobsled federation rules — a lot of them.

“There are times when it feels claustrophobic from a design standpoint,” Scully said.

He began sketching on top of federation diagrams to stay close to the requirements. Next came a more refined drawing, then an array of three-dimensional designs, each slightly different.

These virtual sleds were subjected to computational fluid dynamics — a sort of digital wind tunnel. The computer showed which one moved through the air most efficiently.

The BMW crew took the winning shape and began to tinker. Each slightly modified design required about a day to produce on the computer; test results would be ready by morning. The crew worked its way through 69 iterations.

“This has been the most intensive project of my career,” Scully said. “I confess, I loved it.”

Speed always intrigued him. As a teenager in New Hampshire, Scully was a talented enough snowboarder to earn a sponsorship, but when he looked ahead — snowboarding was not yet an Olympic sport — the future seemed limited. A listless year at two colleges followed. Schoolwork proved far less interesting than his new hobby, modifying and racing sports cars.

This did not thrill his family. His father was an architect and his grandfather a Yale professor and architectural historian.

In 1992, Scully found a way to combine academics with his need for speed. He enrolled at Carnegie Mellon in Pittsburgh to study industrial design and the art of making cars go faster.

“There is a clarity with any type of racing project,” he said. “The purpose is very defined.”

For the bobsled project, BMW concentrated on the two-man sled. The four-man version already was being produced by former NASCAR star Geoff Bodine, who had helped the U.S. win medals in that event.

Super-light carbon fiber allowed Scully to play with weight distribution for better handling. Having experienced the violent shaking and thunderous roar of a bobsled run, he also sought to make the new sled run smoother and quieter so pilots could drive more precisely.

The first prototype arrived at the Olympic track in Park City, Utah, in March 2012. The sled had a sharp nose, slim body and swept-back tail.

As the racers gathered around, Scully looked at the 6-foot-3, 205-pound John Napier and wondered if he had made the interior too narrow.

“I thought there was no way he could fit,” Scully recalled. “He hopped in and said he’d never been more comfortable.”

The athletes were keen for better equipment. Though Holcomb piloted the winning four-man sled at the 2010 Vancouver Games, U.S. men haven’t earned gold in the two-man since 1936.

U.S. coach Brian Shimer explained to Scully: “If the sled’s fast, they’ll find a way to fit.”

The initial trials presented only minor glitches, but Scully and his crew kept fiddling with the design. In January 2013, they sent a new version to Austria, where the Americans were competing on the World Cup circuit. Instead of practicing with the prototype, Holcomb raced it the next day.

On his first run, he jumped in and snagged a steering line with his foot, bouncing his sled off the wall and losing precious seconds.

“That just killed me,” said Scully, who would wake at 3 a.m. to watch the races online.

His economic design left scant interior room. After the push start, the pilots and brakemen had to align themselves perfectly while jumping in.

No one complained. They were more interested in the steering mechanism, which can be surprisingly complex despite the fact pilots turn by tugging on D-rings connected to ropes. Holcomb kept pestering for a linkage that would improve feel and response.

“I appreciated that Michael didn’t punch me in the face every once in a while,” he said.

In fact, the designers wanted all the feedback they could get for last-minute alterations. BMW will say only that it made a “significant investment” in delivering the final six sleds — three for the men, three for the women — to the U.S. trials in October.

Elana Meyers, a top pilot, survived a dicey moment while banking too high on a turn in practice. Later, she posted the fastest women’s time and recalled thinking: “I love this sled.”

She and Holcomb medaled at a World Cup race in Calgary the next month. The American men and women swept the podium at separate events in December.

“Last year, I’d get to the bottom (of a run) and think there was no way I could have driven any better, but my times weren’t fast,” Meyers said. “Now I can make mistakes and still win.”

The U.S. team will get more practice at the Sanki Sliding Center in the mountains above Sochi. When its Olympic competition begins Feb. 16, bobsledders will be gambling on equipment that still feels relatively new.

Scully plans to travel to Russia to watch his babies — the sleds, not the athletes — in action.