New vehicle types coming soon

I'm working on an update to my sprite pack. I want to add two (maximum three) trucks (including trailers) and a PK. This is because I think cars alone aren't enough to create traffic in a racing game. I left out trucks from my first version because they're much more difficult to design than cars and are very time-consuming. The trucks will have this structure: the trailer will be a separate sprite from the tractor.