Amazon.com : Shark Wheel Electric Power 38" Longboard with 95mm, 78A Black Megalodon Shark Wheels, 25.2 Mile Range Electric Skateboard, Wireless Remote with 4 Speed Options of 6.0MPH and up to 26.1MPH :
SHARK WHEELS DNA 72 mm 78a - Red - Longboard Wheels
Shark Wheels may have actually reinvented the wheel - Newegg Insider