(TheStreet would like to hear from entrepreneurs what made their small businesses successful -- newfangled strategy, clever products or services, tried-and-true management techniques. To do so, please click on this link and follow the directions. TheStreet's readers may soon be hearing about your business.)By Jeanine Skowronski, MainStreet NEW YORK ( TheStreet) -- Back to the Future fanatics, rejoice: A Massachusetts-based aircraft manufacturer is getting ready to sell a flying car. Terrafugia, a 4-year-old company that specializes in making light sport aircraft, will unveil its dual-purpose vehicle, the Transition, at this month's Experimental Aircraft Association Convention in Oshkosh, Wis. It hopes to start delivering the futuristic transport in 2011.