I have to do a Toyota Camry cake for a 16 year old party. They want it to be 3D any suggestions.

I think I'd carve that one out of a loaf pan cake and go from there. Maybe so it could sit up on the wheels I'd put the car on some thick maybe one inch dowle pieces glued to the main cake board and then sit the cake on top of that with another sturdy cake board. I'd also use crusting (Viva) BC and fondant for the windows, mirrors, lights and tires. Hope that helps... good luck.