Jay Leno takes a spin in McLaren’s Elva speedster

Jay Leno recently got up close and personal with the McLaren Elva, a sexy speedster devoid of a windshield (though one is available) and packing over 800 horses. The design is extreme, and in this latest episode of “Jay Leno’s Garage” we learn about some concessions made to get the car legal on the street, at least in the U.S. For…