I can drive, mostly at 80-100 kph with short bio/gas breaks, for 20 hours *and still be in province of Ontario*. There is a stretch of about 600 kms that literally feels like all there is in the universe is evergeen trees on either side hour-after-hour. There is one section where there is no gas after about 6 pm and I actually had to use the 20L jerry can I had laid in for that drive.

And by the way, that's hardly the least remote area of Canada (it is rural and sparse, but we have some rural and "Oh my gawd, another sign of humans!" areas).

I used to commute 85 km each way daily for 3 or 4 years. It was about 45-50 minutes most days, though I had one snowstorm where it took 3.5 hours (boy, was I late for that meeting!... most of that was in the last 10 km of urbanity).

Another time, coming home, I was the only thing on the road, and the final leg to the country home (hilly, black ice) normally takes about 15 minutes and could be done 80-130 kph if you were willing to risk a stray gendarme. That bad night, that one 15 minute leg took over 2 hours and the car was sliding sideways in the oncoming lane but actually proceeding towards the face of the rock cut at the time (because I gently touched the gas coming out of an S-curve... doing about 30-35 kph and the car tried to spin). The hills were icy, so you couldn't accelerate up them or your winter tires would spin. You couldn't accelerate much on them downhill either. So you had to follow a routine: Top of hill, gently start to accelerate very lightly. Build up speed to 60-80 kph by the time you got off the bottom of one high hill so that you have enough momentum to cross the next one with 10-30 kph speed at the crest. The biggest hill saw me at 10 kph and if I had not made it up that hill, I'd have been in a valley that I could not get out of until the next day.

I describe that latter winter weather as a fun type of terrain and road condition to test players going cross country *even on a good road* in a wheeled vehicle.

Hong Kong ObTrav:

A friend said you've never experienced anything like stepping out of a friend's apartment in Hong Kong in rush hour. You are in a press of moving people immediately (zero personal space) and they all know how to move, where they are going, etc. and you don't know how to move with, across or against the current nor do you know where you are going, nor can you see over the sea of people if you are not very tall. It's instant claustrophobia.

Maybe on some worlds with high pop, as soon as you walk out the lock or gate from the Starport, you are literally in a *sea* of people. That might be very disconcerting.

Tangential ObTrav:

Imagine the Londonian traffic scenario *in 3 dimensions* with grav vehicles. The Fifth Element and Attack of the Clowns...errr..Clones... showed examples of that.