Wouldn't you need some sort of magnetic rail for that? One hesitates to think about the upkeep.
You do need a magnetic rail for that. The reason why it's not a total economical failure is because only the one place where the train is currently floating over needs to be powered. So, while powering the whole length of the rail would suck a city dry off juice, it is not really necessary, because only the magnets that are one kilometer ahead the train are being powered up and are turned off as the train 'flies' by.
As for airport security, I understand people may not like it. I understand they may choose other means of transportation above the plane due to these annoyances.
I do not, however, understand people who fail to see why it HAS to be this way.
Sure, 99.999% of the flights wouldn't be interrupted in any way if the security wasn't there at all.
But it doesn't really take a strong imagination to think WHAT IF?
Think: You kiss your beloved wife as she's boarding the plane to visit her mum and then turn on the TV to learn that your wife is dead. Her organs are blasted all over southern Nevada, because some mentally unstable f%&k wanted to live forever and loaded his laptop with nitro and blew up the plane at 30.000 feet.
Would you NOT be ENRAGED if some suited prick showed up on TV and said
"We are sorry, but with the passenger's convenience in mind all security procedures were cut down. People didn't like their laptops being checked, you know. Also, we've been losing some billions of dollars because of the security being inconvenient. Well, shit happens."
What can be done to ensure safety has to be done and that's it. That's the only way.
Along that line I can't understand those jerks that walk around the streets at night screaming "F*ck the police!".
If I put a bullet through his legs so he can't move and aim at his forehead he will CRY for a police patrol to magically pop out of nowhere and stop me.
People hate what they find inconvenient without ever spending one damn second to really think about it.