Jules,
I do a lot of work on sailboats. (You those lightening rods floating out in the big flat bay?)
First, Contact you insurance carrier for both the car and the coach.
It sounds like your car was hit for 3~4K$ (No Joke). It should be covered by your comprehensive.
The fact that you only know about the monitor panel in the coach just means that that is all you have found so far. I would also worry about anything else that has semi-conductors in it(just about everything). Like the converter, the inverter, the GPS and any radios or television stuff. Check it all out as best you can and if something seems to be different than it used to be, put it on the list as well. The strangest is things like wheel bearings that got lit up and now have burned places.
Lightening stories available here for as long as the beer keeps coming.
Matt