Hail to the (chief’s) wheels

After Barack Obama took the oath of office Tuesday, he rode to the White House in a new custom-built Cadillac limousine that, other than larger windows, isn’t dramatically different than the one built for President George W. Bush in 2005.

But that the car’s still unique.

“Making comparisons to any other car falls apart because there is no comparable car,” said Cadillac spokesman David Caldwell.

Specifications and construction of presidential cars are overseen by a small government group; GM is mum on the specifics.

And Caddy isn’t alone. A look back: