I think these companies are more or less covering their backside. Like the article said, and it's true modern cars have HUGE computing abilities, some now are coming with built in hot spots not to mention the computing ability for the "driverless car."
It's in the rhelm of possibilities that such computing powers could be used for criminal deeds.
I don't really see aftermarket tuning shops being effected though, just the terrorist with a CPU hacking into someone's car potentially altering it's path.....