Wonder if anyone can help me. I am trying to find facts for which major motoring innovations were first tested/introduced at Le Mans. I have heard that headlights were first tested at Le Mans in 1923, Superchargers in 1929, and Disc Brakes in 1953. Are you aware of any others? I heard windscreen wipers were first tested there as well, but then I learned they have been around for longer.

Any facts or links are really appreciated. Thx, O