What about some of these HD GTA cars? They're HD remakes of cars from the GTA 3D Universe (Mostly GTA III cars). I think they're very nice looking and they would look great with BeamNG's physics. Here's just some of them (click for larger image): Of course, you'd probably want to get permission from the person who made them.
I think some rovers out of parts out of Kerbal Space Program would be nice. I can give you a few pictures laterif you don't knowwhat I mean.
Maybe a Toyota Pruis? Or maybe even a Ricer Pruis Or maybe even a Dually Pruis OR EVEN WORSE, a 2016 Toyota Pruis Look that up it is UGLY
If you make it a little nicer looking (like remove the weird thingy that could be a fastback as well as a station wagon) and just a bit more permormant, sure.
Okay, that's the truck (damn...) @HadACoolName Whow, for goodness sake, yes! The Legran strech limo isn't the truething to me, but the ute, the station wagon and the coupe look really nice! Although, you should shorten the cab on the doublecab D-Series a bit by making the back doors a little shorter. That one's just too long for my taste... Six out of five stars for the Wendower station wagon.