I feel like this is a very early access (pre-alpha) game. Its not bad, but its not great either. As a starting base for a (hopefully) great game in the not-so-distant future, its quite exquisite. But at the moment: the map is bland, the gyroscope control is wonky, and it has no replay value.
I understand the development team is very small, possibly just one human being, but constantly updating this project would prove rewarding to the development team and the users. Heres what would convince me to re-install Cubix Car (and pay for it): Multiplayer, improved controls (with setting to disable gyroscope), customizable vehicles, and a level editor.
For one human, this would take a lot of time and dedication to make happen, but let me suggest something. If you were to add multiplayer at a price (maybe call it Cubix Car Pro), Id be willing to put in $5 for multiplayer and an option to drive with the touchscreen, as long as I was ensured that the game would be under constant development and frequent updates.
Light Aruko about Cubix Car, v1.1.5