I believe Blurt is correct with the Azimov connection.
Not to quibble with Vitriol, but a drive axle which doesn't allow differential wheelspeeds can't go around a corner very well and is mostly used in straight-line drag racing. It's not a LSD but actually a locked differential.
I've posted in the Tavern a brief essay on Positraction and other LSD systems, at
https://stomping-groundz.com/index.php?topic=1024.msg10460#msg10460I regard that scene from My Cousin Vinny as one of the high water marks of American cinema, and I fell head over heels in love with Marisa Tomei just as did every other gearhead I know. One irony, though, in Lisa's testimony about the murderers' car, is that while the 1963 Pontiac Tempest did offer IRS and a LSD, Pontiac's trade name for LSD was actually Sure-Trac rather than Positraction, a technical error which fortunately didn't affect the outcome of the film.
To be fair, the Pontiac Sure-Trac differential and the Chevy Positraction differential were both built in the same plant in Saginaw and were for all intents and purposes identical.