Some additional fixes to the game.

So, I get the rare comment and video of a bug where the vehicles get stuck in a location or are going off the path. While I haven't experienced these bugs myself I do guess what leads to the vehicles getting stuck so I coded a system along with tweaking the car's collision to hopefully prevent this bug from happening. Along with preventing vehicles from trying to board the Ferry if the ramp is up, I updated the textures on the notes so they might be easier for players to spot.