'02 sahara auto - 118,000 mi. activated cruise control @ 55mph - speed immediately began increasing ! - at about 60 mph i realized something not right - cruise control would not de-activate and speed continued to increase ! slightly rattled i began braking. the brakes struggled to bring jeep to complete stop and engine continued to try to overpower the brakes. as fate would have it i was about a block from my mechanics shop ! just removed foot from brake and jeep accelerated up to 45 - at which point i pulled into shop again forcing to a stop with brakes. turned off engine. restarted and engine immediately revved to very high rpm's. turned off and i am awaiting diagnosis. anyone experience this scary scenario ?