Plus Airtravle could be made 10x better without all that usless security shit. I fligh often from Switzerland to Germany and most of my time is spend standing in one line or another on the airport.
I see no reason that boarding a plane cant be as efficent or almost as efficent as getting on a train.
The problem (as I'm sure many others have stated before) is that airport security doesn't really solve the problem of being able to crash a plane into a skyscraper. However, reinforced cockpit doors, armed pilots, and a belief that a hijacker will use a plane to commit suicide instead of as hostage do effectively solve this problem.
I see no reason that boarding a plane cant be as efficent or almost as efficent as getting on a train.