In Moscow's subway system, you get a ding-dong sound warning you that the doors are about to close. If someone is still in the doorway while they are closing, the doors sense the pressure, and will retract for a second or two. they keep doing this until the doors finally close. no need for a conductor in the middle of the train to yell at you to get away from the door.
Once all the doors manage to close, the driver in front gets the green light and moves to the next station.
Hovercrafting is interesting, but much more complex.
you'll need to figure out a method of propulsion, and the computers need to control the vehicle on three axises now. cameras and lasers would be off the ground at varying heights, and no quick stop brake in order to avoid hitting that retaining wall in front of you. too complicated.
Jumping will be too slow. they gotta accomplish this thing inside 10 hours, which means a minimum speed of 15 miles an hour. getting a jump, landing or rolling into position, and jumping again will be very unlikely to achieve 15 miles an hour.
plus what if you jump into a swamp?
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In Moscow's subway system, you get a ding-dong sound warning you that the doors are about to close. If someone is still in the doorway while they are closing, the doors sense the pressure, and will retract for a second or two. they keep doing this until the doors finally close. no need for a conductor in the middle of the train to yell at you to get away from the door.
Once all the doors manage to close, the driver in front gets the green light and moves to the next station.
Hovercrafting is interesting, but much more complex. you'll need to figure out a method of propulsion, and the computers need to control the vehicle on three axises now. cameras and lasers would be off the ground at varying heights, and no quick stop brake in order to avoid hitting that retaining wall in front of you. too complicated. Jumping will be too slow. they gotta accomplish this thing inside 10 hours, which means a minimum speed of 15 miles an hour. getting a jump, landing or rolling into position, and jumping again will be very unlikely to achieve 15 miles an hour. plus what if you jump into a swamp?