Really cute. I loved it.
My main points would be to have a way to stop easily the music, maybe having different speed on bike depending of the type of roads (maybe faster on the bike lane ?) having more use for the bike than just going faster and having a way to park the bike at the entrance of a building when trying to enter would be nice. Having to get back getting out of the bike and going back to the door can be a bit irritating at times.
Hope this help, again thank you for your work (games and videos), it's inspiring.