Do you have a link to where car rocket launchers are mentioned?
Seems a bit weird how nuclear rockets in cars suddenly make the car the most suitable vanilla vehicle (not counting rr artillery) for endgame.
It's under the list of changes made from suggestions made to developers as balancing. It was raised in a twitch stream with developers and wasn't rejected instantly like many suggestions are. As it helps to add balance early on. But yes nukes are strong from it, but you are very weak in it.
Worms haven't been updated as they also added the slow effect on ground from worms. I will probably add a note on the front of what FFF we replicated up to.