We’ve witnessed first-hand how car companies test the suspension setups on new vehicles. They also use computer simulations with realistic physics models. This video from ExtenPro shows how various vehicle suspensions might handle on a punishing course they set up in the vehicle simulation game BeamNG drive.
If you’ve ever been on a boat in choppy seas, you know how stomach-churning it can be. Nauti-Craft has developed an active suspension system similar to the one used to smooth out cars and trucks on bumpy rides. While it can’t totally cancel out waves, it does dramatically mitigate them.