Choice...I cycle because I enjoy it. I would rather grab a bike and get some where near by, than crank the car, drive to the place, find a freakin' parking place... The bike is quick easy and if I see something along the way I can stop and look at it, don't do that with the car. I hope in the not to distant future to get out of car completely except for longer occasional trips. Right now I have to have my truck for work.
Aaron