An onboard air jacking system simplifies tire changes. (automobilemag.com)
The GT had already featured a radically styled body, but the GTR took this a little further with features such as a very large rear spoiler bolted directly to the chassis like a true race car, 18 inch hollow magnesium Speedline centerlock wheels, pneumatic air jacks for raising the car in the pit lane (like the SV - R, it was too low for a rolling jack), and an emergency fuel shutoff switch on the left front fender. (en.wikipedia.org)
«Our teammates did a fantastic job recovering from a broken air jack and losing some time. (corvetteracing.com)