This game is amazingly well put together for a hobbyist! I take my hat off to you (not a fedora, though, we just can't seem to shift those things) for a job well done!
The story is pretty solid, it looks very polished (although there is a lot of character model reuse, but that's totally forgivable in a solo project in my eyes!) and my eyes nearly popped out of my head when I realised there was a driving aspect to the game!
Outstanding stuff, I had a blast playing it and I'll be keeping an eye on updates / sequels / new games from you for sure! Keep up the amazing work =)