Henry Smolinski was a Northrop-trained engineer who left his job to start Advanced Vehicle Engineers, a company focused on bringing a flying car to market.
Smolinski was set to begin production for the retail market the next year, but on Sept. 11, 1973, he went on a test flight with pilot Harold Blake and was killed, along with Blake, when a wing strut detached from the car.
Source:-
http://www.mnn.com/green-tech/resear...enry-smolinski