Its been another good day for Ferrari, Sauber and Mercedes. Not such a good day for Red Bull. Some relief at McLaren that they managed to get some laps in but there would seem a long way to go.
Interestingly, from the pictures we've seen, only Mercedes seem to splashing on the Flo Viz paint. The question is, trouble with the aero, looking for conformation of CFD / wind tunnel predictions or routine development stuff?