I love this type of game! :D And the visuals. So aesthetically pleasing, entire landscapes panning out with the maps, in a variation of not just locations but also types of light, and seasons. It looks great, it feels great, it's fun...
The controls seem suitably slow considering it's a truck you're driving, and makes it the right amount of challenging, but I wish the road could be a bit more rounded, with more gradual inclines, as it is you sometimes lose boxes even when you drive carefully, at the lowest speed, without even swerving or avoiding an obstacle, just running over those inclines in the road. Maybe the dynamic with the boxes could be tweaked too, maybe a little more weight in them...
Apart from that this was a thoroughly fun time. I hope you make more vehicle-based games, like this or something differently entirely, could play for a way longer stretch of time!
-cd-