I saw this thing on "Tuner Transformation" (a show on the Speed Channel) and was wondering if anyone had one, tried one, thinks one is worth it ?

http://www.cg-lock.com/


Supposedly it straps you in like a racing harness but using your stock 3-point seat belt. It seems like a sound premise but was wondering what people's opinion was on it. It doesn't even cost that much if you get 2. I think it's too much though if you just get one. Thanks for your input.