Yeas Honda offers one in theyr new cars. A buddy just got a 2006 civic which has it. All I can find is a little black box that is connected to the negative side of the battery. So I dont have a clue how it works or if it works.
They are for sale at Canadian Tire, $199.95 (CDN). I have also heard that KIAs come from the factory with that device. I can't see car manufacturers installing them if they don't work. Probably allows them to use lower grade steel and cut corners ?? I am not sure if the electronics inside cost that much, you are probably paying for the concept.