Robert Kubica 's Formula One return with Renault has been delayed . On a personal level , my recovery is very encouraging and my doctors keep being impressed . '' The German driver was due to test the car at Barcelona on Friday but his plans were called off after he suffered a broken leg in an accident during practice for Sunday's Spanish Grand Prix. But Kubica has not fully recovered from serious arm injuries sustained in a rally crash .
Robert Kubica 's Formula One return with Renault has been delayed . The German driver was due to test the car at Barcelona on Friday but his plans were called off after he suffered a broken leg in an accident during practice for Sunday's Spanish Grand Prix. But Kubica has not fully recovered from serious arm injuries sustained in a rally crash .