Feb 26: The new F1 business model

Until recently Formula 1 was the preserve of the major motor manufacturers. But the economic slowdown has led Honda, Toyota and BMW to withdraw from the sport. And at the same time F1 has introduced a resource restriction agreement to get budgets down to below E100 million a year. James Allen reports on how English firm Cosworth has taken advantage of the new climate to re-enter the sport and supply all four new teams on the grid.