The American Le Mans Series presented by Tequila Patrón made isobutanol its fifth officially approved energy source at the beginning of the 2010 season. Dyson is a former Series champion (2003 ...

A martini at Le Mans, perhaps. So what kind of booze, then, would you equate with the American Le Mans Series? How about tequila? At least, that's what Patron would like you to think.

North America's two sports car racing series, Grand-Am Road Racing and the American Le Mans Series, announced a merger on Wednesday which will come into full effect in 2014.