I've been having trouble finding all vehicles, it's the last main game trophy i need, I cant find :
Chevrolet Tow Truck
Mercury Custom 
Cadillac Series 61 Touring Sedan
Cadillac Series 75 Limousine 
Lasalle V8 Sedan
 
if anyone can help that would be great

I JUST found the Chevrolet Tow Truck on the road outside the Westlake Tar Pits.

I only need the Studebaker Commander now. :(

There are non-main game trophies? Yeah duder helping with this is nearly impossible. I know one of the cars is only available during the Gas man case it's parked outside the Insta-Heat factory when you visit.

@blacklabeldomm said:

There are non-main game trophies? Yeah duder helping with this is nearly impossible. I know one of the cars is only available during the Gas man case it's parked outside the Insta-Heat factory when you visit.

For the PS3 the extra case has trophies.

@Skullking said:

I've been having trouble finding all vehicles, it's the last main game trophy i need, I cant find :Chevrolet Tow Truck
Mercury Custom
Cadillac Series 61 Touring Sedan
Cadillac Series 75 Limousine
Lasalle V8 Sedan if anyone can help that would be great

I followed the cars guide from the general guide link and the cars link. It took some time, but I got platinum. If you don't find the answer there, google the car+l.a. noire (worked for me).

General

Cars