July 31, 2013 7:18 am Bike of the Future Travels East Coast The ELF bike runs on both man power and solar power. It has been turning heads along the east coast as Mark Stewart rides it from North Carolina to Massachusetts. US & World Videos 0:40 Watch: Police dog tracks and finds missing 85-year-old woman in Colorado 2:19 11-year-old celebrates teachers with appreciation snack cart 1:19 Met Gala 2024 after party looks: Cardi B, Lana Del Rey, EmRata 6:22 Craig Melvin compares ‘TODAY' crew to NASCAR 1:02 Judge indefinitely delays Trump's classified documents criminal trial