Jerez Test, Day Three                           6 December 2007

Drivers:      Mark Webber                       David CoulthardCar:          RB3 - 05                          RB3 - 03Times:        1:19.605 - 63 laps                1:21.055 - 62 lapsFastest Lap: Robert Kubika        1:19.157

Circuit length: 4.423 km

Back in the mists of time, there used to be a series of races referred to as "Formula Libre," which meant drivers could take part in just about any car they fancied. Thursday's  testing was not quite as chaotic as those events, but the fact that some people were running  normal  grooved  tyres  while  others  used  the  2009  slicks,  definitely  made  it impossible to give much meaning to lap times. Not that beating the clock was on the agenda for the two Red Bull Racing cars.

David and Mark swapped cockpits, so that the Scotsman was in the car with the 2008 specification ECU, while the Aussie drove the 2007 car with traction control and engine braking disabled. Mark had a profitable morning, working through an aero programme  as  well  as  trying  out  the  2009  slick  tyres.  However,  an  unscheduled engine change cut short his afternoon programme. David concentrated on evaluating the 2008 electronics and had a good day: "We made a lot of progress and it was very encouraging," said Chief Test Engineer, Ian Morgan.

As  planned,  Coulthard  is  the  only  Red  Bull Racing driver running today for the final day of testing of 2007.