There is a revised, much better version of this interview
   • Part 1 Tyler MacCready Interview: Inv...  

In part 1 of 3 Dr.Tyler MacCready recalls the process that led to walkalong flying. Early hang gliding, paper airplanes and osmosis as his father, Dr. Paul MacCready, worked to develop humanpowered flight. Most of the still cutaway images are from the Academy Award winning documentary Flight of the Gossamer Condor, available at
http://www.gossamercondor.com/

The full transcript (a good read) is at sciencetoymaker.org

In part 2 Tyler recounts how appearing on Scientific American Frontiers created an opportunity to manufacture and sell walkalong gliders himself. In part 3 he talks about turning over operations to a toy company.