Your "whoa, dude, this is gnarly" for the day

Two guys suit up to ride their longboards down the Claremont Canyon road. I used to live not far from where this road ends at the Oakland/Berkeley border, and I know that road well; it's one of the few ways to get through the Oakland hills from the valley inland if you're going toward the Bay.
Back when I lived there (over 20 years ago now) I'd heard about people doing this ride at night (!) so as not to get caught (and I'll bet they weren't wearing helments!). They must have some seriously pro equipment to get that smooth a ride going that fast. Dang, I say, dang!