We don't know what's going on here either.
First of all, there is no getting around the fact that this is a very odd video. We understand that someone strapped a couple of rockets to a Volkswagen Beetle and now it goes like hell, but what everything else going here has to do with it we have no idea. We're told that the rockets produce 1,500lbs of thrust apiece, and that it will hit 100mph in under 2 seconds, but that's it. There is a WWII-era halftrack in the video too, for some reason.
Whatever the halftrack or the machine gunner sitting in it are all about, it's great to see a rocket-propelled Beetle, that's fantastic.