Unrealised potential
This game does not look ready, but has a lot of potential to it.
1- you need more tracks;
2- Controls are tricky, but once you get the hang of it it's not hard to be doing 2.smthg laps. Even though it's pretty obvious you drive with the arrow keys, it's always nice to point out the controls at least in the author comments;
3- I hate the white truck. This would be irrelevant, but it would add to your game to let people choose their truck colour, if different trucks had different features, as better handling, speed or acceleration, even better;
4- Am I far stretched to think that upgrades would be nice along with the new tracks?
5- After submitting my score the game just ceased to exist, couldn't we go back to the menu page (or in future versions, upgrade page and race track selection)?
In the end it was a fun couple of minutes. Once evolved, this game could reach really high scores.
Good luck.