Until everybody insists like you on driving. Because of the increased traffic, it now takes longer. Not to mention trying to find parking. And with the extra traffic, it's dangerous to bike now. Oh well.
It depends on the density. If it is a desirable place to live, that will definitely happen. If it isn't, you can still drive and more people won't necessarily join you in driving. The secret is to just live in a so-so place.