Productive day for Red Bull

David Coulthard and Karun Chandhok worked on similar programmes to yesterday, the main difference being that both men managed to complete significantly more laps, on a track where conditions were not ideal at the start and end of the day, when temperatures were very low.

Karun continued to work on the 2008 electrical systems, while David evaluated various mechanical and aero components aimed at next season.

Tomorrow, David Coulthard continues testing while Karun Chandhok's cockpit will be taken over by Robert Doornbos.