It may be the same concept, but the difficulties in implementing them in an automobile is compactness and weight considerations. Un-sprung weight at the wheels needs to be kept at a minimum in order to keep the wheels on the ground. Handling will suffer immensely if the unsprung wheel and suspension components are too heavy relative to the weight of the vehicle. Inertia needs to be overcome by either the total weight of the sprung vehicle or the light weight of the unsprung wheel and suspension components. This is why heavy cars generally ride better than light cars. The more expensive light cars overcome this obstacle by utilizing more high-tech light weight suspension components and light weight wheels. It's also the reason why we don't see too many cars with solid rear axles anymore in lieu of independent rear suspension setups- the ride is better and handling is better, even on rear wheel drive vehicles such as BMW and mercedes.
Marcel
