Bring Your Own Big Wheel is an annual event in San Francisco where hundreds of people ride tricycles with plastic tires down a steep windy hill (this year it was Vermont Street). This is the second run of the day, taken from a helmet cam on the top of my helmet. For a better video which is a compilation of this and other runs, check out:
http://www.youtube.com/watch?v=bd175dvE2Hs
Also, check out the sparks on our heels! If you're wondering how we made them, we embedded Tail Devils ( http://www.taildevil.com/ )in our shoes.

See more videos uploaded by runningcommntary