How big is Ferrari's advantage? Is Mercedes really in trouble? Is Red Bull-Honda right to be so confident? Week two of Formula 1 pre-season testing begins with many unanswered questions.
On the eve of the final winter test beginning at Barcelona, Autosport F1 reporters Edd Straw and Scott Mitchell joined F1 Racing Editor Ben Anderson to tackle these and many other talking points at the pre-season running's halfway point.
You can follow every moment of track action from the final test with Autosport Live as ever, with coverage beginning from 7.45am UK time on Tuesday.