I don't love the idea of "leisure time on business trips." I want my leisure time to be spent actively doing things I like with my friends and family - not 8 hours of vaguely uncomfortable idleness on an international flight.

From my perspective, every advance in workplace efficiency means less idle time at work - which in turn means less overall time at work, and more opportunity for success. If I am forced to be at work, let me at least be doing something!