What's that intriguing shape poking out from underneath the curtain? Rimac Automobili assures us all via its Facebook account that there's a Concept_One in there -- or, at least, a "one-off car based [on it]," marking the delivery of the company's much discussed and sometimes questioned 1,088 horsepower electric supercar. So, why the secrecy? According to the company's namesake executive, Mate
