**AND DO NOT ATTEMPT THIS YOURSELF** because we're not entirely sure how he survived doing this. 

70 mph... that's like, how fast you go on I-25, and that's the speed Zak Maytum, a Boulder native, is travelling at in this video. This is no CSU frat boy scooting to class in flip flops longboarding.

We're not sure if we should think this is amazing, or just dumb. How did he stop? What if he hit a rock? We've got a lot of questions, but he pulled it off.

Maytum is actually a professional downhill skateboarder (and still alive, we think).

Via Venom Skate