I won't let anyone wash my car. Maybe if I had a newer car, but as long as my dart is my only transportation ..... no one touches but me. I have had a couple guys offer to wash and detail it for me. How about no, because only I know the car and where to not spray the water because it leaks.
Antenae is the main thing as far as what might get damaged doing the work. Then the fish emblems. This assumes they don't use some stupid product that scratches. Driving my car - that's another issue entirely.
The wagoneer is just as bad for a machine wash due to the luggage rack and rivetsthat stickout all around from the plastic wood trim that's now gone.