The ex-MIT whiz kids who formed their own company (Terrafugia) have just finished the fourth and final round of flight and ground testing on the Proof of Concept Transition® (POC) at Plattsburgh International Airport in upstate New York. *** A total of 28 flights were made, designed to evaluate handling, climb, performance, take-off and landing. *** “The Proof of Concept validated three basic goals,” says a company release. “We could design/build a roadable aircraft, drive it and fly it.” *** The tests will lead to several engineering and design modifications which will be incorporated in the Beta Prototype, targeted for 2010. If all goes according to plan, the company intends to make its first customer delivery in 2011.