a904 died while driving

Check your fluid again and even smell it.
Is it different than before?

There are really only two things that can cause that.
1. a burned up trans (clutch packs)
2. a bad converter and possibly even a trashed pump with it.

They don't slip like that and live through it in either case.

Check that fluid again. (looks and smell both) as burned fluid smells a little like smoke from a wood fire.