I did a couple of tries and my high score was 40!
It felt like the kind of mobile game you play while waiting for the bus to keep your thumb busy!
I wish I could control the height of my jump depending on how long I hold the button. Plus, maybe if you do another version in the future, it would be great to alternate the cars from left to right. Eventually maybe have planes and helicopters spawn at the top of the screen so you have to dodge stuff on the ground and in the air! Just a few extra ideas :)
Good job on your submission for GBJAM