Sutil annoyed after battle with Vettel

Mark Webber is not the only rival enduring a difficult relationship with Sebastian Vettel.

After the recent Canadian grand prix, German countryman Adrian Sutil mockingly described Vettel, 23, as a "superstar" following a post-race dispute.

Sutil, who drives for Force India, had told the media Vettel had sarcastically asked him if his rearview mirrors had fallen off during the race.

Their dispute kicked off again at Silverstone, after Vettel muscled past the 27-year-old on the final lap.