good credit. 30% go to senders considered sub prime, those with blemishes on their credit. the devices can help the customers. >> because we can give them a much nicer car for a lot less down payment than in the past. >> at bubba hills in florida, every single car has a device. >> it is just like a power company. they will cut your power off if you don't pay the bill. >> you can control the devices from a computer in his office. >> then we're going to send the command to disable the vehicle. >> but hill said he's only disabled a dozen cars in the last five years. the maker said the technology is helping car buyers and sellers. >> the success has been remarkable. we've seen significant drops in deliquentys and significant drops in repossessions. >> reporter: but in vegas mary goal ender is now suing her lender cag acceptance. >> this car, i have control over