WD Quark is also protected with small transparent and waterproof cover. Enough said, this 4WD Quark prototype has competed successfully at Michelin Bibendum challenge.The vehicle create its own class in four wheeler, which actually similar with 4WD machines that are selling so well in America at present, yet created low-emission inner-urban fuel-cell vehicle. To drive each of four 17″ diameter wheels, this 4WD Quark is using electric motor which connected to the chassis by means of triangular wishbones.