By Alan Baldwin ABU DHABI, Nov 25 (Reuters) – Triple world champion Lewis Hamilton has taken inspiration from U.S. tennis great Serena Williams as he prepares for a Formula One title showdown with Mercedes team mate Nico Rosberg this weekend. Serena, along with her older sister Venus, has attended grands prix recently and Hamilton said he had been honoured to spend time with the 22-times grand slam singles champion. “I was actually with Serena last week in LA … she came out to Mexico (for the race) which for me was a real honour to have someone of her power, someone who has achieved so much,” Hamilton told reporters in Abu Dhabi.