hour. >> to be able to bring my race car here to san francisco and race it around on closed off city streets was like a dream come true for me. >> it's the latest of his in sanely popular web videos, gymkhana five. >> it's a race sport. >> precision maneuvering around obstacles and controlled skids, spins, and turns called drifting. box genius is the way he uses moving objects like this cable car to take his tire shredding stunts to another level. >> it's like, okay, you have a small section of a block. here is what you said you were going to do, now go do it. >> and how about driving 60 miles an hour up russian hill,