I have the whole shebang on my truck. Vsc,trac, atrac and it's all various high speed acronyms for the same thing. It uses the wheel speed sensors and a computer to control individual brakes. For normal highway driving, I leave mine on. I can let my mind float and push my truck hard with no worries of rolling, spinning out, sliding off a corner.... it would be a great asset for any stoner. You can go into a 25mph corner at 60 and somehow pull through it without any great effort or driving skill...on dry pavement. If I am really feeling froggy I turn it off and drift through the corners tires squalling, mind focused, shift hand slinging through gears... On the other hand, if it's wet out at all I turn that crap off. If you take a corner too fast the inside front tire locks and brakes chatter and the front end just pushes causing severe understeer. Nail it coming out of a corner and the light blinks and shit beeps and the throttle is cut. What fun is that? I thought throttle limiters were for five year olds on mini bikes? Long story short, if you can drive you won't like it. If you are a stoned soccer mom you will love it.