For lack of different words that sucks. It would take some pretty good teeth to chew through some of those wires. I know they are just trying to survive, was your car stored indoors or outside?
I have fought squirrels and chipmunks trying to get into my house, tearing up shingles and vents. I thought they were cute until they damaged my house. After they crossed the line I had to trim my trees back and set rat traps. My dog has pretty much taken care of the chipmunks, killing almost two dozen.
I am not sure how you discourage rabbits, most likely lots of YouTube videos with suggestions.