Eric's parents got Aspen a bike for her birthday. Whenever we're at a store and she sees a bike, she wants to sit on it.
Now that she has her own bike, however, all she wants to do is push it around herself. This is partly because her legs are still a little too short for her to reach the pedals, but mostly because she likes to be in control of the bike. She does this with her strollers, too, which can get a little dangerous in public.