Definitely some relatively chill synth music would have gone a long way to help, as the game feels a bit off with no music and I think that would have fit the aesthetic you were going for. The controls were relatively smooth and the player's car is really neat. Just not a lot to do and no audio makes that even more noticeable. It's a very good foundation to build an infinite runner or platformer game from.

I like the car model and the trail it emits but the concept is a bit too simple for my taste. I do think you can add a moving background and vehicle moving along or against you to spice up the gameplay. Also, try adding some music track to create some mood

I really liked how smooth the car felt to control!

It feels wrong to be controlling something that's not at the center of the screen. Maybe put the camera dead center at the back of the car 

Some things you might want to improve: 

- Maybe make the car move at a constant speed? The fact that you can just slow down/stop the car makes the game very easy

- The low-res background gives the game a very cheap feeling, maybe use a better HDRI/model some 3d buildings and put them in the background

- I think it would be more engaging if the camera moved left/right a little bit depending on where the car is going

- Textures/sound obviously

Nice controls, the car is very nice to look at. I couldn't pass level 2 ::(
....and missing sounds