New Mercedes, Toro Rosso & Williams break cover as testing starts

As 2010′s first pre-season test began at Valencia on Monday morning, fans got their first glimpse of the Mercedes GP MGP W01, the Toro Rosso STR5 and the Williams FW32, with the three teams launching their new cars at the Spanish circuit.

Michael Schumacher and Nico Rosberg unveiled Mercedes’ challenger, while Sebastien Buemi and Jaime Alguersuari were on hand as the wraps came off Toro Rosso’s Ferrari-powered machine. Williams, meanwhile, chose to hit the track with little pomp or ceremony…