Team McLaren Mercedes began a three day test at the Circuito de Jerez in Spain today with Juan Pablo Montoya and Alex Wurz present for the first day's running.
There was one MP4-20 present at the circuit driven by Juan Pablo, while Alex drove an MP4-19B due to the return of the MP4-20 chassis from the Canadian and US races.
Alex's programme was focused on Michelin tyre testing for the forthcoming French, British and Mobil 1 German Grands Prix. Juan Pablo meanwhile was concentrating on performance testing, including suspension development work.
Juan Pablo set the fastest time of the day with a 1m18.203s lap, while Alex was fifth fastest with a 1m18.687s lap. Juan Pablo and Alex will be back in action at the circuit tomorrow.