Presumably the feasability of going wheeless depends on where you live. In my experience, the rural public transportation system is much better in the UK than in the US (or at least it was 20 or so years ago when I lived there), but in the US, if you travel outside of the cities you have to provide your own wheels or depend on someone else to provide them.

I spent the first half of my adult life as an urbanite and managed quite well without a car. But since moving to the country, wheels have become a necessity since it is 8 miles to the nearest town with shopping or any form of public transportation.

However, I must confess that as a somewhat green anarchist, I get a certain satisfaction chugging past overturned SUV's on icy days knowing that my little old AWD Subaru wagon uses half the gas and handles twice as well (due to its low center of gravity) than the behemoths.

KateG