/r/whatisthiscar: What is this car? - Post pictures of cars you'd like identified, or identify them yourself. - October 31, 2021 - 21:32
/r/Autos: r/Autos - Four Wheels and a Motor - Place for anything and everything with 4 wheels - November 18, 2018 - 15:20
/r/Damnthatsinteresting: Damn, that's interesting! - The most interesting place on reddit - November 18, 2018 - 12:32
/r/mechanical_gifs: 100% Non-Organic .gifs - This sub is for .gif/.gifv/silent .mp4 images that contain a subject matter of mechanical origin. - November 18, 2018 - 11:52