Anyone tried solenoids for jerky movements?
Some on mcmasters have 960 oz of push-pull force (at 1/8"). Altough you couldn't simulate full range of motion, you could simulate hard shock, strips, and braking spring compression (V8 Supercars anyone?).
Also, while turning hard, the time it takes to compress the suspension to its max deflection is quite fast. Those would be perfect, no?