One time I was in a pinch, I was hauling up a mountain pass and when I got to the other side took a break, got ready to leave and found the throttle wouldn't move and the pedal was STUCK.
mind you I was in the middle of nowhere, so parts would have taken days, several hundred miles from any friends or family. I had a milwaukee-dremel, zip ties, and determination. On a manual-shift truck you could just zip tie the throttle to 66% and make do, but here's what I tried first:
Cruise control never worked on my truck, but it uses a throttle cable of sorts. A nice fat insulated one. Lo and behold it's more than long enough, and it had a lead ball on the end. I took the plastic mounting pieces from the melted throttle cable, which had fused solid, and spliced them onto the cruise control throttle cable. I cut that ******* off of the cruise module and mounted it up like stock, got the business end into the cab, and found I already had a self-tapping screw on the GO pedal, so I wrapped it around and tightened down.
Lo and behold I had a new throttle cable, that worked perfectly and got me home and then some! Tested it in neutral a bunch, then got back on the road. I got a spare in the toolbox now but I still use that butchered cruise cable. Long story short it's just a simple cable, you could use a damn bike brake cable kit but it wouldn't last long with the heat!