What ends up being "faster" doesn't just depend on travel speed though. It also depends on startup costs. The startup cost for biking can be higher than a car (if you need to carry the bike out from your apartment) but also the other way (if you need to walk to your parked car and then walk from wherever you find parking to where you're going).

People might also be willing to trade some extra time for less exertion, but this depends heavily on the terrain.