LE CASTELLET, France (Reuters) - Formula One world champion Lewis Hamilton made the most of a more powerful new Mercedes engine to lap fastest in free practice for France's first grand prix in a decade on Friday.
While the Briton led both sessions on a sizzling day at Le Castellet, traffic gridlock on the roads leading to the southern Paul Ricard circuit meant many fans missed much of the action with rows of empty seats in the grandstands.
