I saw that system implemented on my Dad's 1948 (I think) Humber Super Snipe when I was 4 or 5.
Mum's Panty hose got us home without cooking.
The generator was left unbelted/unloaded.
There's a few "ladies" in town who could do a serp belt...1640 on my Nissan in only 64 1/2 inches afterall..