Overall concept is very interesting but the #1 priority should be improving the physics and collisions imo. Items feel extremely floaty and weightless, including the vehicle. Cargo will float and fall off as a result of very little movement and the buggy collisions make loading cargo very tedious with a high chance of an item pinging into the air and getting severely damaged/going too far away to bother recovering. Loading and organizing cargo is also quite tedious because of this, plus the lack of collisions while the item is on the arm. It'd feel a lot better if I could press an item into position/push items with my claw rather than picking it up and dropping it 4-5 times in a row and jiggling my vehicle hoping it will get into position.
I know this is early days yet but I'd warn against putting the game on Steam until the physics/collisions get improved enough to the point you can quickly load cargo and prevent items pinging away whilst loading. I enjoy what's here and see a good future for the game but I'm spending more time trying to load items than doing the deliveries themselves, and often losing items due to the weightlessness and weird collisions.