For me riding public transportation isnt an option neither is riding a bike. I live out in the country on top of a hill. I could get down the hill rather quickly, but getting back up would take 2-3 hours, then i have a 6 mile ride to town, and then i have to go across a bridge into another state, then 5 miles from that bridge to my job... that wouldnt work out because i would have to leave at like 4 AM to get there by 8. Plus there are no bus stations that go to my town because we are so small.
Smaller cars for places like here would work fine. Understand that some people absolutely have to have a car to get around whether they are old, or just out too far to walk ot ride. I plan on getting a street bike whenever i can afford one, that will help me alot on gas.