I’ve played similar games before, and while this one is easy to pick up, it felt a bit too easy. I didn’t notice any speed increase, although I only played for 30 seconds — if there is a difficulty ramp-up, maybe it could kick in a little sooner to keep things more engaging. Introducing levels or stages that gradually increase in speed or add new patterns, perhaps two cones to dodge at once occasionally, would really enhance the experience. I don't know how to but if you can, a leaderboard would be really nice as well as powerups such as invincibility for a few seconds.
Visually, it’s quite basic, but you mentioned time constraints, so that’s totally understandable — and despite that, it fits the jam theme really well, especially with the focus on roadways and cones. I liked the instant retry option after crashing once, and think the main menu is nicely done.
The main thing I’d strongly recommend improving is the audio. The current sound is very repetitive. A more relaxing background track would go a long way in making the game feel smoother and more enjoyable.
Overall, it’s a simple yet fun type of game and well-themed entry. With a few tweaks and polish, it could definitely stand out even more. Great job!