so if you press the number 9, since there is no "9" vehicle, it takes you to what seems to be the map that you're building, it is completely untextured (car, ground) 

it seems like you're building what seems to be a RACE TRACK with a monster logo (sponsors, etc.)

Maybe this was an easter egg idk but yeh 

Btw i had to crop the image cuz itch only allows 3MB 😭😭😭