Box spawned near an edge, I pushed it over the edge while attempting to grab it and now it is not possible to grab the box any more, since touching the edge respawns me. And there is no way to reset the level.
"Use E again to drop the box" sounds like you forgot to add a message that E is used to pick up the box or you hoped that people would deduce it what to do
I'm getting motion sickness from this camera, probably because you rotate the camera instead of moving it, like other games do
Using W and S to slowly accelerate the car doesn't fit well in this puzzle game. I'd expect instant feedback when i press a button.