Testing is cut short for Sebastian Vettel as his Red Bull is hit by engine problems . The 2014 -time world champion says `` teething problems '' are normal . McLaren recovered from the technical issues that had kept its car in the garage Tuesday to see Jenson Button set the leading time in its 2014 racer with a best lap of one minute 24.165 seconds among 44 laps overall . ` The teams are getting used to new engine technology as part of four rule changes . McLaren 's Jenson Button clocks the fastest time on day two of the second day two test in Spain .
Testing is cut short for Sebastian Vettel as his Red Bull is hit by engine problems . The 2014 -time world champion says `` teething problems '' are normal . The teams are getting used to new engine technology as part of four rule changes . McLaren 's Jenson Button clocks the fastest time on day two of the second day two test in Spain .