Jerez de la Frontera (Spain): Red Bull team principal Christian Horner wants to give Mercedes more of a run for their money in 2015 after launching the new RB11 on the season's first day of testing in Jerez yesterday.


Daniel Ricciardo drives Red Bull's new car on Day One of the F1 winter testing in Jerez de la Frontera, Spain yesterday. Pic/Getty Images 

Sporting an unusual camouflage livery, the Red Bull completed more laps in the first hour on track than they managed on the first day of a disastrous first test last season.