Not your usual looking for a story (now solved)

Hi all, I was thinking about a book/short story I read years ago and I wondered if anyone here could remember the author or book name.

The story is set in the future and it’s about cars that can drive themselves, people who look after them have years of trouble free motoring but the people who don’t have nothing but trouble, the story comes to a point where a badly treated vehicle goes all “Christine” on the owner.

I believe it was called ‘Automatics’, does this ring any bells for anyone?

Hoping you can helpSammi