We gave Henry a bicycle for his third birthday, last year. No interest. No amount of encouragement could get this kid to sit on his bike more than a few seconds (except when Elliot would sit on the bike which would cause a bike passion to erupt from Henry- however briefly lived).
Well, a year later, after a trailer-pulled bike ride with Adam, Henry came home and hopped on his bicycle and has been obsessed since. He is so proud.