One of the many things I enjoy about covering BMW's annual financial results press conference (reports here, here, here and here) is the 'show and tell' side trips - such as the Leipzig i3 'factory within a factory' in 2014. This year, rather than travel to the former east Germany, we needed only to cross the road from BMW Welt in the northern outskirts of Munich to the company's oldest factory - built 'out in the country' in 1922 (to make aero engines, with an airport across the road on what became the 1976 Olympics site), and now landlocked by the much-expanded city, requiring ingenious solutions for further expansion, such as the new paint shop (of which more later).