I wouldn't use marine wax on my truck. Marine vehicles have a gelcoat, so the wax is made for gelcoat, vehicles have clear coat. Probably not the greatest thing to use.
As for me I just use the simple Megs NXT 2.0 liquid wax. I have always liked the shine I get from it. I use a lot of megs products though so I'm kinda swayed that direction, mostly stuff from their professional line and not off the shelf items.