 Shares of Workhorse Group Inc. WKHS, 2.96 gained 0.3 in premarket trading Tuesday, after the electric vehicle maker swung to a net loss and reported surprisingly negative revenue, while saying it expects to deliver 250 vehicles this year. The company recorded a net loss for the quarter to Dec. 31 of 156.1 million, after net income of 280.5 million in the year-ago period. 