So... I decided to play around with just how much the semi can pull, and ended to with this... Hauling a semi with a flatbed on a wrecker that is itself on a semi with a flatbed The end result of driving three fully-loaded flatbeds (connected via nodes) into a wall at ~60 mph (the orange bit on the left is a dummy that was in the driver's seat) Connecting three fully-loaded flatbeds together width-wise and loading four cement mixers on top (~110 metric tons). Turns out this is too much weight. The tires won't even spin if you dump the clutch. Hauling a cargo aircraft via a 3x2 platform of flatbeds connected together via nodes. The rear two vehicles are semi cabs stripped down to their frames that are just their to support the back end. It worked, but became extremely unstable after 40 MPH.