Tuesday 8 July at 19:45 : McLaren debuted a 'shark-fin' style engine cover as three days of formula one testing got underway at German grand prix venue Hockenheim on Tuesday.

Rain showers were an unwelcome element on the first of the three days of action, but the weather did not stop Silverstone winner Lewis Hamilton from giving the striking bodywork addition its maiden runs.

Similar bodywork is already being used by Red Bull, Toro Rosso and Renault in 2008, and Force India joined the growing 'shark-fin' club at the recent Silverstone test and British prand prix.

All ten F1 teams were testing at Hockenheim on Tuesday. Also on driving duties were Nico Rosberg (Williams), Adrian Sutil (Force India), Nick Heidfeld (BMW-Sauber), Nelson Piquet (Renault), Kimi Raikkonen (Ferrari), Sebastien Bourdais (Toro Rosso), David Coulthard (Red Bull), Kamui Kobayashi (Toyota) and Alex Wurz (Honda).