Could be anything they been having some system problems though between the Ferrari engines. Though that's not really a hardware problem like which the Renault engines are having.
Petr Hlawiczka ‏@hlawiczka #F1 FIA approved current #McLaren MP4-29 rear-suspension solution last summer. Caught other TDs by surprise now.
ESPN F1 ‏@ESPNF119s Ricciardo has left the pits and stopped on track with smoke coming from the rear #F1 F1 Technical ‏@f1technical36s Red Bull went out for the first time today, and on the first lap it stopped and caught fire please log in to view this image
The F1 Times ‏@F1Times30s That is a smoking Red Bull RB10 - which didn't even manage one sector! - please log in to view this image
Breaking News: Christian Horner expands his vocabulary with a new F word. I think I may be having an overdose of schadenfreude right now