On speed

My son has been asking me for a mountain bike. And I have been deferring this for as long as I could. I know he is old enough to ride his bike on his own, but with his impulsive action and being hyper all the time, I just worry too much. So to buy him a mountain bike will just make me worry more since I know he will speed up on it.

He isn't into the speed like a roller coaster can provide, but he is into speed in things that he has control like biking and skiing. Soon, he might be asking me for sport bike accessories.