LONDON : Ferrari's Carlos Sainz will join Williams for Formula One's post-season test in Abu Dhabi next month, the Spaniard's future employers said on Friday.Sainz is leaving Ferrari at the end of the year to make way for seven times world champion Lewis Hamilton, arriving from Mercedes.The test at

Spaniard will get first taste of Williams’ F1 car capabilities when he appears in the season-ending Abu Dhabi tyre test after his final race for Ferrari