Formula One racing is a nerve-racking sport at the best of times, but at this stage of the year – when pre-season work is reaching its climax, nobody’s sure about what their rivals have come up with over the winter break and there’s a question mark hovering over where new cars will sit in the pecking order – it’s particularly anxious. And so, despite enjoying the challenge of 2011′s wide-ranging regulation changes, and feeling confident in the new MP4-26, even the nerves of McLaren’s engineering director Paddy Lowe are jangling. In a Vodafone McLaren Mercedes ‘Phone-In’ session, Lowe discusses the British team’s decision to launch later than their key rivals, adjustable rear wings and his hopes for the 2011 car