I've considered pming and inviting everyone who's ever posted in the art area, but that's a lot of work. One thing I'm going to do is get in touch with my old professor and inviting the car design students to join in. I'll bet we can learn from them what's hot in trends now and they can learn how to draw something that isn't 10 years in the future.
The last show I did a booth at I met a bunch of kids that like to draw. Wish I wouldv'e directed them here. If you know of anybody that draws cars, get 'em on here.