You just have the next user inspect the vehicle for damages and report it before they start driving. And probably make people take pictures of the vehicle's condition when they drop it off. Plus, they have cameras in/on the vehicle.

And If you don't pay the ransom, it guarantees the files are released. How's that better?

Believe it or not, these large ransomware groups do release files and don't keep bleeding the same victims repeatedly. They make millions a year doing these ransoms. Like I said, they only get paid because they have a history of holding up their end of the deal. The first report that says LockBit group doesn't release the files or continues the ransom after payment will be the last ransom they're ever paid.

Probably not, actually. Their entire business model relies on people paying to unencrypt the files. As soon as they don't hold up their end of the bargain, they'll never be paid by anyone ever again.