Oh, you thought I was kidding but here's the link:
It is amazing the stuff an obsessed eight year old can find on You Tube. Even more amazing what other people will put up on You Tube.
Stop signs were Alex's first great love. He would light up like Christmas morning to see that red octagon in the street. We would have to plan our walks with extensive stop sign pauses.
Since then he has also discovered elevators and buses. Both of which have their own channel on You Tube.