Red Bull drivers summoned to test

[John S]

Could this be because the McLarens with KERS are getting quicker and both Rubens and Lewis put Mark under pressure at the start in Germany?

Vettel also fell foul of Ferrari & Macca KERS at the last race so it makes sense to work on your weaknesses.

Sebastian Vettel's scheduled attendance at the Ennstal-Classic rally in Austria this weekend has been called off by his formula one employer Red Bull. 
 
Instead, the 22-year-old German has been summoned to the Idiada Proving Ground, near Barcelona, for testing of the title-contending RB5 single seater.

Vettel's Nurburgring-winning teammate Mark Webber was also there on Saturday, as the Milton-Keynes based team attempts mainly to improve the car's efficiency from a standing start.

"The world championship is entering a crucial stage," team adviser Dr Helmut Marko told Germany's Sport Bild.

"That a test like this has priority (over the Ennstal-Classic) is clear to us. Obviously it is a shame, but we are talking about the world championship," he explained.

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