Impressive!
Seriously, congratulations on the work! Even if you used AI, AI is just a tool, and it's perfectly normal to use it. We all have lives and jobs — we can't code non-stop like machines :)
It really looks beautiful, and every day I complain that the 32X never got games like this when it was released... It could have had a very different lifespan.
If you have the motivation, keep working on it a little more to get even closer to the feel of the PS1 version. Add some beautiful large background images to enhance the atmosphere, and maybe give players the option to use CD music through the Mega-CD, so it can really feel like a true Wipeout experience, complete with proper techno music from that era!