Hey Tom, could you please do an episode about rollercoasters? Those are so technically interesting! From the design of the trains to the design of the track shape to safety systems, lifts or launch systems. Actually, some rollercoasters use those exact Linear Synchronous Motors (LSM) or Linear Induction Motors (LIM) or hydraulic or pneumatic launch systems to launch rollercoasters, a little like the fighter jets are launched from Aircraft carriers.