Please help! My gas pedal just stuck wide open

My wife was driving my '66 Cuda home from a car show and the gas pedal stuck wide open. I was driving my Harley in front of her and she couldn't get the car stopped and I finally pulled alongside and told her to turn the engine off. We got it stopped w/o incident but the engine was smoking and now we can't start it without it revving at max. I played w/ the linkage but not sure where to start so we can get it unstuck. Please help ASAP.

Thanks,

Mike