Finally got around to playing this, and first of all I have to say great job completing this in a week!
The pixel graphics look very nice and the music in pretty catchy, nice work on both of those!
However, it was a bit tricky to figure out how to play the game at first. Maybe clearer in-game instructions on which keys to press to interact with buildings and when it is possible to do so would help. For example, I tried picking up a package from the tacos truck by driving above it, until I realized I had to pick it up from the side.
Nevertheless, once these small things clear up, the game is a lot of fun and shows so much potential for expansion! Whether it's a bigger city, more types of shops and buildings, or completely new gameplay elements... I'm sure you already have great ideas in mind.
If you do decide to expand this, I'll try and stay updated on your work through Twitter. If not I can't wait to see more games from you!
Keep up the amazing work :)