Clark often gets calls from people who wonder if extended warranties on cars are worth it. Though he's not a fan of them, extended auto warranties can make sense in some instances.

Now Clark is getting calls from people being offered a unique kind of extended vehicle warranty that seems to be a real bargain. They're told they can purchase the warranty, and then if they never use it, they'll get back the money they paid. Turns out it's just a ruse.

The Kansas City Star reports there is a lawsuit concerning the sale of these money-back warranties that's been going on for 6 years! The plaintiffs, obviously, are having difficulty getting their money back. The court has now ruled that the warranty company should give the money back but…surprise…the company has since filed for bankruptcy. Good luck getting your money back!

Here's the lay of the land when it comes to cash-back warranties: The warranty companies market directly to dealers and get them to sell their warranties -- instead of a manufacturer's own -- at huge profit margins to both parties. But the warranty company itself doesn't even have enough underwriting to pay for repairs. They just collect money with no intention of paying it back out. Then they do what's called a "bust-out," which is essentially like filing for bankruptcy, and disappear with their share.

The end result is that you as a consumer are stuck holding a worthless warranty. So don't believe the claim that you'll get your money back at the end. If you do buy a car warranty, you want to be sure it is the manufacturer's own. Otherwise, it only has a marketing company backing it up, and it isn't worth the cost of the paper it's written on.