I'm at 36,000 ft and on the way home after the first F1 test of the 2013 season in Jerez, Spain. The tests are a crucial part of the year, giving the teams the chance to iron out all the technical issues that may befall their cars before the season starts in Melbourne in mid-March.
The fact behind this week's test in Jerez are amazing for a host of reasons...least of which is the pure emotional joy of Formula One engines getting ready for March. It's also an interesting event if you are the tire supplier for F1.
This is an incredibly intense week leading up to the first test when the 2013 race car finally takes shape. The chassis is built, checked and painted and then the tens of thousands of parts that make up a modern F1 car are fitted to the chassis, all under a stopwatch that is counting down until the moment the car has to leave our factory.