Here's an idea from a post by a ShroedingersCat on another forum.
To get rid of cars, just ban parking.
Define parking as "stopping the car, getting out of it, and walking away".
That's right, you can drive all you want, you just have to stay in your car!
Since walking and biking are now "victorian activities" and no longer desirable, and since American cars are designed with mirrors inside the sunshades for appplying make-up and doing one's morning toilet, and have cup-holders, DVD players in back, etc., just require those who want to have cars to put their money where their mouth is and never park them, as defined above.
I think a certain number of Americans would go for this, since they drive more and more, are gaining rather than losing weight, and as a telling indication of "consumer sentiment" by some of the best psychologists in the world, American car makers are building even bigger models for 2006.





