Over in the UK there are a lot of city car companies. One in particular is a bit different as it allows you to drive a low emission car during the week and a sports car at the weekend. (see
Quadriga. Intelligent Car Ownership. )
Now I know it's not the most 100% effecient 'green' concept, but it is getting a lot of attention in the UK because it's getting people out of the gas guzzling Range Rovers and into greener cars for the bulk of the time, people who would have otherwise stayed in their big cars.
Does anyone know of anyone doing similar in the USA? I've tried googling but can't really find anything.