Van builder Workhorse unveils hybrid helicopter

Workhorse Surefly helicopterSometimes building electric cars may be about more than building electric cars. At an event in New York City last weekend, Workhorse, which is known for converting delivery vans to plug-in hybrid power, aimed a little higher. It revealed a hybrid helicopter, according to an Ars Technica report. The company says it has reinvented the helicopter...