Paul MacCready flies on solar wings . Anna Dietrich : We depend on cars and planes for most transportation . She says the highway system and commercial plane network limit mobility , choices . John Donvan: If the prototypes succeed , people will be able to park airplane in garage , she says .
Anna Dietrich : We depend on cars and planes for most transportation . She says the highway system and commercial plane network limit mobility , choices . John Donvan: If the prototypes succeed , people will be able to park airplane in garage , she says .