Motor racing's world championship will be decided this afternoon as Marlboro-
McLaren team mates niki LAUDA and ALAIN PROST battle it out for the Portuguese Grand Prix in Estoril. It's the final race of the season and Lauda has a three-and-a-half point lead over Prost. If he comes first or second Lauda will take the title he last won in 1977. If
Prost wins it'll be the first time a Frenchman has ever taken the driver's championship.
Commentary from SIMON TAYLOR in Estoril.
Producer ROB HASTIE