TIL in the 1920s Fiat had a 1/2 mile race track built on the roof of their factory

https://kottke.org/21/09/fiats-rooftop-racetrack

https://www.reddit.com/r/todayilearned/comments/152py4z/til_in_the_1920s_fiat_had_a_12_mile_race_track/