There are urban parts of the US where some delivery trucks never go on the highway and don't drive that far in a day.

There are also parts of Germany where delivery trucks need to be able to go on the highway and to drive farther than 62 miles.

These trucks are solving the "last mile" delivery. Do you see many USPS delivery vans on the highway? That's the market.

In a dense urban environment, 62 miles is still less than most delivery trucks drive. In the US, the actual average overall is more like 2-3x that.

All the time. That being said, it is Seattle so I-5 isn't usually moving at 50 mph anyway :)

this quora question has some good answers. Rural routes could be 150, urban routes could be as low as 5 miles but more typically around 60-80

https://www.quora.com/How-many-miles-per-day-does-a-FedEx-or...

The US has cities, I believe.

But even those tend to have much lower population density than European cities. In Europe (and especially Germany where this was developed), large parts of cities consist of multi-family homes with a high population density. Those make up a much smaller part of cities in the US.

Do you have any sources to back up this claim?