Thieves have a new way to steal cars. A method for clean thefts, served on a silver platter by car manufacturers who sell cars equipped with key fobs instead of traditional keys, without any protection against a simple attack. Even Toyota!
If I had had such a vulnerable car stolen from me, I would be happy to discover that flaw. I would just sue the manufacturer for selling such a product. When you create such a vulnerability, you are guilty of gross negligence. The onus isn't on the customer to prove that this flaw was exploited, but on you to prove the theft was made with different means.
When manufacturers will have lost tens of millions of euros in damages, perhaps they will consider paying for security responsibles who have a clue or two about security.