[Publius]

I think the difference though was that we had a federal road system in place before the Eisenhower Act built during (I think) the Hoover Administration (those are the US routes like 1 on the east coast and 101 on the west) that was becoming highly congested.

It was the Federal Agricultural Highway Act, signed in 1925 by President Coolidge.

[GoreIsLove]

Thanks for the info. Eisenhower had something to do with that too, if I'm not mistaken.