This one is for my students, given what we have been talking about in class the past couple of days....Is riding a motorcycle an inherently dangerous activity? Is it an "adult activity"? Check out this video of a 3 year old:
... and this one:
If you go on YouTube and search for "kids on motorcycles" you will find lots of videos like these, including some of actual motocross competitions for very young kids. Some of the motorcycles do have "training wheels" but not all do.