MONTMELO, Spain -- Sebastian Vettel topped the opening morning of the second week of Formula One testing while McLaren struggled for mileage due to electrical issues.
Freezing temperatures, rain and snow meant all ten teams finished the first week of testing with long to-do lists for week two, but with Europe's unseasonal cold front returning tothe north, the Circuit de Catalunya was left basking in warmer temperatures on Tuesday morning.
Ferrari, Mercedes and Red Bull all completed over 80 laps in the morning session, with only McLaren struggling to make the most of the better conditions.