Cars can go a lot faster than a bicycle (assuming safety is a concern, there is a reason I don't have a motorcycle - which isn't to say cars are safe) thus per unit time you can get more distance in a car. Which is back to my point: you are throwing away the point of the city with that argument. I realize parking takes more space, but it will be ages before the city rebuilds to the new reality and until then it isn't functioning like it should.