The ragdoll physics you've got in this will always be hilarious to me, as was watching in horror as I attempted to put a parcel into the truck only for it to slowly start to roll away! Really fun concept that you managed to make very entertaining to play.
I did find it was a little too tricky for me, and I found that the parcels often flew straight out of the top of the truck, which I'm guessing is an issue with collisions?
The music is great, and definitely suits the absolute chaos going on at any given time :)