"Among the teams with a lot on their plate on this second day of the test are world champions Red Bull. Sebastian Vettel got out for only three exploratory laps on Tuesday and when he returned to the pits the back of the car was on fire. Design chief Adrian Newey was on Tuesday bemoaning the loss of several ways in which they gained performance over the last few years - including the banning of exhaust-blow rear aerodynamics, at which they were particularly adept, and the requirement now to put the batteries for the hybrid systems on the front of the engine. Red Bull found a performance gain in putting them in the gearbox bellhousing from 2011-13"