F1: Mercedes counting on Hamilton and Rosberg

JEREZ, Spain (AP) - Behind the wheel of his new Mercedes car, Lewis Hamilton felt right at home.

The 28-year-old British driver, who left McLaren for Formula One rival Mercedes this season, drove his new team's new wheels on Monday and wasn't disappointed.

"I'm happy, that's what I can tell you," said Hamilton, the 2008 world champion. "It's still got a Mercedes engine, so it has all the power I used to have."

Hamilton will be driving with Nico Rosberg this season, and Mercedes is hoping to rekindle the fiercely competitive spirit that they shared as go-kart rivals 13 years ago.