The cars are able to rotate to face each scene. Look closely and you can see a cross shaped device at the top of the car. This acts like a cog, with pegs from the roof catching on this 'cog' to rotate the car.
The cars are able to rotate to face each scene. Look closely and you can see a cross shaped device at the top of the car. This acts like a cog, with pegs from the roof catching on this 'cog' to rotate the car.