I tried that but i could not figure out how to get out of that room.
I ended up waiting at the door to the red room and when a cart entered waited until the room was done turning red. Then using the few seconds that are left, i hop onto the ledge outside the door the cart exits on being careful not to get smushed by the closing door. When a new car exits, i can jump onto it.
I am interested on how to exit the room below the red room.