The market you describe, in my opinion, is better served by mass transportation.Lets break down what monthly car ownership would cost for myself:
$100 Insurance
$75 Parking Space at apartment
$140 Parking downtown
$30 Fuel (assuming about 8mile drive to work, 40mpg and $3.50 fuel price, obviously these all can vary greatly)
$30? Maintenance (no clue on this one)
$X? Car payment/deprecation
So we are at $375 without taking in to account a car payment or any kind of depreciation, obviously this is my own unique situation so it is really going to depend on your own situation, but I can easily see a market for something like this for certain people.
Mike