I like it. For the first 10 minutes or so, it was pretty fun. However, after about five or six deliveries, I felt like I’d seen enough and didn’t really crave more. I understand it’s for the jam, so I’m not rating it based on replayability or addictiveness, but I still wanted to give some feedback.
For me, the game is missing a hook that would make me want to come back and try to beat my own record. I didn’t really feel the impact of the increasing difficulty throughout the run, it all felt pretty much the same the whole time, and I think that might be my biggest issue.
Personally, I would add more things to do on the road in the future, like collecting pickups or something similar, so there aren’t as many dull moments where you’re just driving and waiting for something to happen. This is just what I would do, but ultimately it depends on the kind of feel you want your game to have. The way it is now is perfectly valid.