I've been seeing these on TV and I was wander if any has tried one.

 

I haven't tried one, but have heard wonderful things about them. I almost asked for one for xmas, but decided to go with something a little less pricey.

Still want one though.

 

if im right it calculates everything by you putting in the weight of your car and it calculates it that way, just to let you know

 

I got one years ago, thought it would be so cool because I race so much etc. In reality I played with it once, maybe twice, got bored, and I don't even know where it is now. Hard to find a road flat enough to make it remotely accurate, pain in the **** to get perfectly level on the windshield, etc.