As shown, there are two core design ideas for the retracting mechanism: Scissor arms and parallel bar slider.

Both choices require a similar amount of material, however they differ on the amount of servos or storage available after installation.

The main body of the robot is reduced to one-third scale. The body needs to be capable of housing all other individual components and maintain structural integrity under the weight of lifting a car. 

The concept behind this portion contains inspiration from car lifts in mechanic shops. 

Not only do they contain the retracting mechanism, but also the main lifting mechanism that raises the car.

This involves a scissor lift with one end fixed, while the other end is pulled by a motor to raise the top plate, lifting the vehicle