Early thrashers used to inadvertently skate into walls of glass from time to time, which was a problem. It turned into a bigger problem when the whole Kourier thing got started and thrashers started spending a lot more time trying to go fast through office-type environments where glass walls are considered quite the concept. Which is why on an expensive skateboard, like this one definitely is, you can get, as an extra added safety feature, the RadiKS Narrow Cone Tuned Shock Wave Projector. It works on real short notice, which is good, but you can only use it once (it draws its power from an explosive charge), and then you have to take your plank into the shop to have it replaced.