The champions have pinned their hopes on a line-up of second year drivers Lucas di Grassi and Michael Ammermuller, both of whom have shown well in testing, but have patchy race records from 2006. Although the German won a race on his first appearance, at last season's Valencia opener, he rarely threatened Hamilton or
Nelson Piquet Jr as previous employer Arden International suffered a rare off year. di Grassi made his entrance to GP2 with the unfancied Durango squad, and struggled to make an impact on the points in a campaign littered with problems and prangs.
Negrao returns for a third season to spearhead the renamed Minardi Piquet Sports squad now that Piquet Jr has secured himself an
F1 testing berth. The Brazilian has shown flashes of ability, but needs to get over the jitters when starting from pole if he is to make a name for himself. Testing performances have been solid, as have those for rookie team-mate Roldan Rodriguez, who could cause the odd surprise if the Piquet team continues at its previous level.
Last season's surprise package, iSport International, has shared the testing limelight more often than not with ART, and fields the strong line-up of returnees
Timo Glock and Andreas Zuber as it bids to end the French team's title monopoly. Glock remains with the team that transformed his season in 2006, while Zuber transfers from Trident for a shot at glory following his unexpected win in Turkey last season. Both have taken turns at the top of the times, and will expect more of the same from Bahrain onwards.
![Lucas di Grassi - ART Grand Prix [pic credit: GP2 media]](http://pix.crash.net/thumbs/297629.jpg)
