Ohio-based Workhorse Group Inc. has made a name for itself in the sustainable transportation industry by manufacturing and selling medium-duty delivery trucks that produce zero emissions. Its line of electric and range-extended delivery vehicles is sold under the Workhorse brand. The company is also known for its innovative HorseFly Unmanned Aerial System, which represents a major step forward in drone technology. Furthermore, Workhorse designs and manufactures drone systems, and offers Metron, a remote data management system that tracks the performance of a variety of deployed vehicles. Founded in 2007, Workhorse Group Inc. was previously known as AMP Holding Inc. and rebranded in April of 2015.