McLaren: We completed more than 1600 km of largely trouble-free running 22 February, 2014 Jenson Button McLaren MP4-29 The fourth and final day of the first of two Bahrain pre-season tests. Jenson Button was again at the wheel for McLaren Mercedes, completing 66 laps as the team worked through a suite of set-up changes. This week’s test enabled the team to develop and refine areas of investigation that were initiated at the Jerez test earlier this month. This week’s run data will feed into next week’s test, also in Bahrain, when the team will update and run the MP4-29 in the specification intended for the season-opener in Melbourne. Equally importantly, the team completed more than 1600 km of largely trouble-free running – an encouraging figure given the important role that reliability will likely play in the opening races. What’s next? Jenson and Kevin remain in Bahrain ahead of next week’s final winter test, which runs from Thursday to Sunday (Feb 27-Mar 2). Subbed by AJN. Content on GrandPrix247.com by: staff & contributors, Reuters syndication, GMM service, Getty Images, Formula 1 teams, sponsors & organisations.