Funny thing about those "cars" (if you can call them cars, they're more like glorified golf-carts!)....you'd think they'd get 80+mpg or better, but they really don't get better mileage then some of these real cars, I think they're coming-in around 38mpg or just a bit better. Ridiculous! I had some friends who had a spiffy little VW Jetta turbo-diesel, it sat 5, handled great and had all the features of a regular car, but being a diesel, it got 52mpg on the highway and about 38 in the city. They made too much sense, so of course they weren't imported into Calif. and the line shortly disappeared.
The awesome thing about diesel jettas is that you can run them off biodiesel. Brewers are the ones that know their REAL value.