The next-generation, in-development personal helicopter SureFly has landed at EAA AirVenture Oshkosh 2017. Unveiled at the Paris Air Show in June, the two-place SureFly is making its U.S. debut here at the fly-in. Developed over the past year by Workhorse Group (Innovation Center), a Loveland, Ohio-based company focused on electrically powered ground vehicles, the SureFly aims to make helicopters...