No way a 2CV will get 3 L/100 km in normal driving! They were more like 5.2 L/100 km in typical driving. They're kind of cool in a pre-war way, but totally unsafe and passé, except as a collector car.
Well nothing is safe in the US. 18 wheelers. Besides all it would need is a better engine/transmission or it would be a good donor vehicle for a hybrid or electric conversion. The Messerschmitt is really awesome though: http://www.youtube.com/watch?v=f8f6B...elated&search=
I've always wanted to own a 2CV, since I was a little kid in Ann Arbor Michigan, where a lot of U of M professors drove them...yeah, I know they're really unsafe (especially in a crash), but they look so cool. We had a Nash Metropolitan in 1964, which I remember my Dad saying got 30 mpg, but somehow it just wasn't as cool looking as the 2CV. Or the Fiat 600, for that matter.