Motor racing: Red Bull's F1 test nightmare continues
(REUTERS) - Red Bull designer Adrian Newey went back to his drawing board on Thursday after another nightmare day for the Formula One champions in pre-season testing in southern Spain.
Australian Daniel Ricciardo, who has replaced compatriot Mark Webber as quadruple champion Sebastian Vettel's teammate, broke down on his first lap of the day and managed only two further circuits before Red Bull called time.
Vettel flew home from Jerez on Wednesday night after managing only 11 laps in two days following battery problems with the new Renault power unit. The team said Thursday's issues were similar to the previous day's.
"Adrian has gone back to the drawing board. There is only so much they can do here at the track," Ricciardo told reporters.