Think gas is expensive? It's even more expensive on hot summer days. Gasoline expands as temperatures rise. That means motorists get less energy from a gallon of so-called "hot fuel" than from a cold one.
When Brent Donaldson, a restaurant owner in Kansas City, Mo., discovered that fact earlier this year, he joined hundreds of consumers in more than a dozen states who are suing oil companies and gas retailers, alleging that they have been overcharged by billions of dollars.
"The consumer is...Full Story