That would not fly in the San Francisco cable car system. The cable has to have uniform slip friction through the pinching grip of a cable car.
When the cable breaks, a field splice is made on the spot 20 or more feet long, and with no cars attached the splice is rotated into the powerhouse where a permanent splice is made overnight. That splice is, I believe, on the order of hundreds of feet long.
How Cable Cars Work - cable, wire rope,aerial trams, wire suspension bridge,Comstock Lode, manufacture wire rope,sisal rope center,hemp center
www.cablecarmuseum.org
One of the powerhouse pulleys is on a long track and is moved out to take up strech in the cable and moved back when a new cable is fitted.