S-Express
Guest
It's quite possible to travel in a straight line on a bicycle, if that's what you mean. It's also possible to ride in tram lines or rails with the right amount of attention to balance.
View: https://www.youtube.com/watch?v=dLRBNjUJlH0
View: https://www.youtube.com/watch?v=dLRBNjUJlH0