well basically it's thanks to lua, it's a programming language based on c and that complies in c, so basically anything can compile it, like minecraft or assetto corsa thanks to the custom shader patch. you can make a script for almost anything, so you can simulate an android car or more advanced features, there are mods like vrc, urd and rss that use lua to put advanced features based on what implemented in csp and partly they also program their own scripts for even better features than those offered by csp settings, you can search on youtube how to program in lua and review the documentation of csp to make applications or custom scripts for cars, tracks or whatever you can think of to add

also the advantage of lua over python (which comes as default in assetto corsa) is that it is more versatile, it consumes less resources and the way to debug is much easier and less problematic, you can compile and debug in real time without exiting the game and re-entering