Back in 1968 I was driving on what was then the CT. Turnpike. I stopped at a toll booth to pay the toll.
When I started back up I had no throttle response. I put the car in first gear and idled to the side of the road. I spliced the cable together and thought that was the end of my problem.
When I started the car up again it was idling at 3,000 RPM! The splice made the cable too short. Ya think?
I looked through my toolbox hoping against hope that I had a spare cable. Nah, no such luck.
I did, however, come across a piece of picture hanging wire -- you know, the braided kind. I took out the old cable, cut the picture wire to the length I needed with a little extra for fine tuning, installed it and went on my way.
That wire lasted for two years before I replaced it with the sheathed cable from an old three-speed bike. That cable was still on the car when I sold it. For all I know it may still be there some 44 years later!!