You’ve just got to love this stuff! Some engineer is always dreaming up something new and improved. Great lessons in why good engineering doesn’t equate to feasible systems in the real world.
I would advise not clicking on the Transportation Futuristics link unless you have 30 minute or so to kill, because the Berkeley online exhibit is chock full of yesterday’s future today, and if you’re like me it’s impossible to stop looking at all the kooky ideas. Even better, as much as I love design concepts (like this aluminum commuter helicopter), a lot of the strange devices are actual prototypes that failed to take off (literally or figuratively).