A Middle Tennessee State University professor who hoped to drive from the east to west coast on just 10 gallons of gasoline drove the distance using only about two gallons.
Dr. Cliff Ricketts and his eight-member team drove from Tybee Island, Georgia to Long Beach, California using 2.15 gallons of gasoline.
The distance was about 2,500 miles.
The team converted a 1994 Toyota Tercel and 2005 and 2007 Toyota Prii to use solar, electric, ethanol and hydrogen fuel in addition to gasoline to make the trip.
The team arrived in Long Beach around 1:15 p.m. local time Thursday, more than one hour earlier than they expected.
"I feel like I climbed Mt. Everest," said Ricketts, who lives outside Mt. Juliet in Wilson County and commutes to MTSU. "This has significance in life and it has significance for mankind."
Ricketts said he's planning a similar coast-to-coast trip in 2013 on only sun and water.