Hmm. Balloon + Lawn Chair = low speed travel!

[August]

Originally Posted by jumpy

The Mythbusters done this one already with one 5 year old kid and three and a half thousand balloons filled with helium. But they only let her lift off the ground on the end of a rope inside a big hangar... not at 15000 feet

Yeah the Mythbusters episode explored the possibility that a child could be lifted off the ground accidentily if given too many carnival balloons. Apparently there is too much wasted space between the smaller balloons as compared to the weather balloons this guy was using.