My son is 2 and has seen Roam at least 10 times.
My son is also 2, and will actually *request* bike movies. My wife doesn't care for it when he says "watch bike movie, mommy." It's priceless to watch him watching the movies, and commenting "they're going so fast" or "whoa."
But the best thing is, watching the movies makes him want to go out and ride his bike (with training wheels). Like father, like son...