Traditionally the preserve of technical talk, the Friday pre-race official press conference ahead of this weekend's Chinese Grand Prix in Shanghai involving Formula 1 team chiefs Christian Horner, Mario Theissen and Norbert Haug at one stage threatened to degenerate into petty bickering.

Having discussed the hot topic of the now legal 'double-decker' diffusers, the subject of conversation moved onto drivers, and particularly Red Bull Racing star Sebastian Vettel, who lost a certain rostrum finish in the curtain-raising Australian Grand Prix last month when he collided with the BMW-Sauber of Robert Kubica in the closing stages Down Under as the pair duelled over the runner-up laurels.

Whilst the young German made a point of approaching his former boss - BMW Motorsport Director Theissen - after the race to offer his apologies, it appeared in today's press conference that the latter has still not fully forgotten or forgiven the incident, interjecting Red Bull team principal Horner's eulogy of Vettel's Melbourne performance by contending, albeit ostensibly in jest: "He decided to be unlucky!"

Horner's riposte, however, was aimed not at Theissen but indeed at Mercedes-Benz Motorsport Vice-President Haug, with the Englishman countering that 'thankfully he (Vettel) told the truth in front of the stewards' - a sure allusion to the predicament in which reigning F1 World Champion Lewis Hamilton and his McLaren-Mercedes team currently find themselves over the Albert Park 'lies' controversy.

And there you were thinking Jenson Button and Flavio Briatore were the only ones at each other's throats...

To see the press conference in full, click here