At Valencia on Thursday Takuma Sato's V10 example blew up - on the second flying lap. It's the third new unit to do so.
Meanwhile, at the twisty Spanish circuit, Williams' 2004 car - the 'interim' FW26C model - ran for the last time.
Technical director Sam Michael said the Grove-based team is 'in the middle' of the build period for the new BMW-powered FW27, that'll be launched on Monday and debuted at Valencia next week. -GMM