That sounds like a win for vehicle owners, honestly, given that encryption is often used for locking owners out of the ability to change things about their car without paying the manufacturer more money.
You might think so, but the encryption used at the time was such that only somebody with quite a few resources (such as a government actor) could reasonably break the encryption. It wasn't a win for owners or tinkerers.
What's more worrying is that there are a bunch of vehicles out there with security that is going to age * very * fast compared to that used every day (SSH, certs, etc). Consider that the automotive industry might be under similar constraints with regards to autonomous vehicles, something a bad actor could really cause some damage with.
