Contractors yah i agree i think that will be almost last on the list. Truckers and garbage men? Idk, i'll be honest in saying i was too optimistic on the self driving car timeline and thought we would have cracked it by now but i feel with recent advances thats coming sooner than later and then arguably 95% of garbage collection (at least where i live) could be automated the second you get the self driving down. Its normally just a truck that pulls up and uses a mechanical arm to dump the bin. If you added some degrees of motion/made the claw more nuanced it could pick up random objects besides the bins. Realize there are a lot of edge cases but once you get a program that can drive the car and identify trash/vs not trash you've got the vast majority covered.