Air ride uses air to adjust ride height and suspention stiffness through air springs. When adjusted right, any car will ride like it's on a cloud. I know they recently started making an air strut that could possibly fit a Z. Has a built in shock absorber too. I don't beleive that air suspention would be good for racing-I.E. Go to the track and pump up the preasure to corner better, then let some air out for a smooth ride home or cruising. From what I've researched, they are mostly for comfort and showing off. I don't beleive the current systems can handle enough preasure to make the suspention stiff enough, and the properties of air alone would inhibit much predictability. Most places I've seen these systems are older street rods and trucks owned by older folks, or kids that are too cheap to buy hydraulics for their crappy lowriders.