Speed hits out at Toro Rosso bosses

Speed's 2007 deal with Toro Rosso was delayed until late in February, with team co-owner Berger saying the American needed to show more commitment in order to stay at the Italian squad.

Berger has made no secret of the fact that the team are interested in Champ Car champion Sebastien Bourdais, who has an option with Toro Rosso for 2008.

Speed angrily hit out at Berger and Tost following the European Grand Prix, saying both him and teammate Liuzzi have very little support from them.

"Gerhard and Franz have their own ideas about what they want to do with their future, and they say things accordingly," Speed told the SpeedTV website.

"That's nothing to do with my performance on the track, that's for sure. It's clear that from my bosses me and Tonio both have very little support.

"It's been that way for the last two years, and it's a lot more now. At some point I said I don't care - if I'm not in F1 next year, if I'm with a different team, it's OK for me. It's actually made me lot more relaxed and a lot more calm, and I think I'm producing better results, actually.

"It doesn't take a rocket scientist to read the press and know that Franz and Gerhard are pushing like hell to get rid of me and Tonio."

Both Speed and Liuzzi retired from the European Grand Prix after spinning off before the end of lap three.

The team's usual post-race press release only said "Nothing to say".