PITTSBURGH, Sept. 24, 2025 /PRNewswire/ -- "I wanted to create a more reliable and longer-lasting valve design for 2-cycle and 4-cycle engines," said an inventor, from Crossville, Tenn., "so I ...

For thrifty motorists, squeezing an extra few miles out of each gallon of fuel can become an obsession. But some have been striving for a semi-mythical goal of achieving 100 miles per gallon of fuel ...