The most coveted type of suspension is a hydraulic suspension. A hydraulic suspension can quickly raise and lower the cars, making it hop and jump -- or dance. Some low rider shows have dancing car contests where hydraulic lowriders actually dance.
A hydraulic suspension uses a hydraulic actuator -- a bladder that can be filled quickly with fluid. It's attached to a compressor, which shoots liquid into the actuator with incredible force, causing it to expand rapidly. Think of it as a small explosion within the actuator. The actuator expands with the force of the fluid entering it and as it does so, it pushes hard on the components around it, causing them to spring away.
This is the same principle that you'd use to jump off the ground. You exert a force from your legs against the ground, and that force propels you upward. When the force is removed (because you're no longer touching the ground) you come back down. Actuator systems exert force that causes the car to push against the ground. Since the ground isn't going anywhere, the car goes up. This is the technique behind Hydraulics lowrider dance.
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