Self-driving cars may be smart, but one thing they can't do (yet) is fly. And what good is the future if it doesn't bring flying cars? Over the years, there have been (more or less) one-off prototypes, but nothing yet that has approached the on-ramp to mass production. Which is a shame for the 6 percent of Pew respondents who said a flying car is something they'd like to own.
Startup Terrafugia has already flown and driven its "roadable aircraft," the Transition, which takes off and soars like a standard fixed-wing airplane. Now it's sketching out a vertical-lift concept called the TF-X, pictured above.