Brought memories of RARS first then TORCS, that allowed writing software racing car simulations for a while, so I guess if driverless cars and tracks used in real races models could be fed to the above software, they could be used as simulators. https://rars.sourceforge.net/ https://sourceforge.net/projects/torcs/. - Source: Hacker News / about 1 month ago

You can download it from here; https://sourceforge.net/projects/torcs/. Source: almost 2 years ago

TORCS: It is the pioneer simulator of free software. With a development with more than 20 years, and with several names behind it (RCS, ORCS and finally TORCS), in this game we can play single races, championships, endurance ... With a wide variety of cars and circuits in a completely 3D environment. The game can be controlled with a wide variety of peripherals such as gamepads, steering wheels and of course... Source: over 2 years ago

For those who don't know, Speed Dreams is a multiplatform (Linux, Mac, Windows...) Open Source racing simulator that started 13 years ago as a fork of the (also free) TORCS, surpassing it in all aspects, especially in physics and visual simulation. Source: about 3 years ago

I also know the youtuber / gamedev https://dreamonstudios.com/ uses Unity for both mobile and the web. In the link I posted to his site it shows his games on ios, google play, poki, and itch.io. He also has some youtube videos where he breaks down his webgame earnings and has mentioned their importance. Source: over 2 years ago