yeah, i was skating really hard. >> and also breaking the law, crossing the double yellow line. in the essence of california's skate speed, kelly describes what it feels like to be in the danger zone. >> you're in the apex, the vortex, and you are just feeling utopia through the tips of your skateboard, your surf board, whatever it is, and you are lost in the gnar getting at it. >> that's gnar, as in gnarly, and kelly's ride is about to get very gnarly. >> skateboarding at speed is an interesting sensation because you get this feeling of holding on, barely in control, like right on the edge. i just got to that bottom section and just start like pinning it. >> at 60 miles an hour, a helmet and slide gloves are kelly's only protection. >> so as i turn one way, the board went. and i turn the other way, and the board just like escalated.