MB's Active Body Control suspension system is standard on the SL550, and the degree to which ABC negates body pitch, roll and squat is almost eerie.

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Somehow the medication disrupts the balance of the body's own pain control system.

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The answer, he said, was to tap into the brain's "hierarchical" system used to control the body.

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Applying an electric current and getting a muscle to jump is easy. (Alessandro Volta jolted a frog's legs 218 years ago.) Peckham is harvesting the body's own electrical signals to control muscles that have been cut off from the nervous system, a process called functional electrical stimulation, or FES. Peckham runs a group called the Cleveland FES Center, a collaboration among Case Western Reserve and two Cleveland hospitals.

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But Microsoft's internet-TV system does do one thing other don't -- full-body motion control.

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Our tester also came with an adjustable height suspension and an Adaptive Dynamics System that governs the stiffness of the dampers on a real-time basis to optimize body and ride control according to driving conditions and the terrain.

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