To confirm, though, there isn't anything implemented (so far) besides just talking to the mechanic, examining the surroundings of the two scenes, fixing the car, and leaving?

I've never been too into these types of games (point-and-click adventure), but I thought I'd give this one a try. For what's here, I'm actually quite impressed! I'm a little stuck, though I've managed to finish the first day :p Good work so far! I would absolutely love to see this progress even further ^^