Formula E's six-way title fight explained

Three different winners, representing three different brands, from the first three races of the season may seem very 'Formula E' in terms of predictable unpredictability. But there's already an established set of frontrunners at the head of the pack - and they've just been joined by a familiar and perennial contender. 00:00 How the title fight is shaping up 00:45 Citroen's complicated success 03:04 Porsche's three-pr...