With the price of gas what it is I think cardboard art cars are the future. Very cheap to make, easy to paint, repairs are a snap with a bit of duct tape and you are off and running again. A bit tricky when it rains, but once you get to work, you just make another one for the commute back. Safety is an issue, basically you die even if you get hit with a bicycle. These two cardboard art car videos are funny, well done, and a great overview of life with one of these cardboard vehicles.
Cardboard Car video fun and artistic
Cardboard Car from England driven by four ladys, very very funny