Dax Shepard & Joy Bryant: Speed Demons

Lover of all things automotive, Dax Shepard joins Joy Bryant for a day of go-karting at K1 Speed in Los Angeles. The two star together in the NBC show "Parenthood" but today Joy is all about making Dax eat her dust. Dax opens up about his past struggles with addiction and talks about his goal of becoming a director. Joy turns out to be a better driver than expected.