In my previous career in the USCG we had relief "funnels" on the HH3 Helicopter, we told the newbies they were "auxiliary" communication devices and had them go talk in them on the ground to make sure they worked properly.Good video. Your comparisons are good, and I agree about the range. I need a truck to do truck things within about 200 miles from where I live. If I am on a road trip I usually stop every 4hrs.
Accommodating my family for hunger or a pit stop.....I can count on one hand how many times we stopped after 4hrs. The kids were asleep and the odds were in my favor. AKA less than 300 miles.