The number of truck drivers whos first language wasn't English who made deliveries for the distributer I worked with recently was high. The number of times that speaking to them came into the scope of their job was 0. They pulled up, backed a truck up at 3:30am once a week and handed us an invoice. They take a nap while we unloaded the back, then they left. Driving through the night doesn't require you to speak, it requires you to be awake and have decent eyesight/perception. They could have been missing their left leg for all we cared. Trucking is like clock work. If you want groceries with the freshest dates in stores when they open, you need as many people willing to drive overnight and early morning workers to get them from the distributors to the stores and on the shelves before anyone wants to wake up.