Our Terms of Service and Privacy Policy have changed.

By continuing to use this site, you are agreeing to the new Privacy Policy and Terms of Service.


Using scissors and tape, the team then creates physical prototypes. They use a previous model and try out different ways to permanently attach a cover. They test the design's strength by taking turns ripping off the covers.

By Jose Pagliery @CNNMoney - Last updated March 26 2012: 9:57 AM ET
Join the Conversation