Biker makes kid's day with random act of kindness

After pulling up next to this vehicle at a light, this biker noticed that the little boy in the passenger seat was super excited about his motorcycle.

So the biker decided to let the kid have a bit of fun. He gestures for the boy to roll down his window, and lets him rev the bike’s engine to feel the power. 

Clearly the kid was impressed.

[h/t: Reddit]