LIVE Formula One -- The Brazilian Grand Prix

LONDON, England (CNN) -- The final race of the Formula One season, the Brazilian Grand Prix, gets underway at 1700 GMT.

The race will decide whether Briton Lewis Hamilton, of McLaren, or Ferrari's home-town favorite Felipe Massa will be crowned as the world champion. Follow the live action here:

1905 GMT: Lewis Hamilton has now been confirmed as the 2008 Formula One Champion. At 23 years and 300 days he is the youngest ever winner.

1859 GMT: Absolute heart-break for Massa and the Brazilian crowd. When he crossed the finish line the title was his -- but Hamilton's pass of Glock on the final lap wrestled back the title into his grasp. This has been one of the great finishes of all time.

1850 GMT: Hamilton has done it! He passes Glock on the last lep to take fifth place and the title. What a finish!!

1842 GMT: It is all happening. Hamilton has pitted, but it's not raining a lot. He's in fifth and needs to hold that for four laps -- or the championship will go to Massa.

1838 GMT: And we have rain! Seven laps to go. Vettel is on his back. This is going to be an exciting finish.

1835 GMT: We are inside the final ten laps. As it stands, Lewis Hamilton will become the new Formula One world champion. The anxiety builds...

1830 GMT: Just 13 laps to go... Massa is holding the lead but Hamilton is sitting safely in fourth place. However... there is a threat of rain in ten minutes time. Could there be one final twist in this amazing season of Formula One racing?

1819 GMT: Hamilton is managing to hold his place in the top five and there is only 20 laps to go. All he needs is fifth and the world title is his. Can anything stop him from here?

1805 GMT: Massa has taken a pit stop and returns to the track in eighth position. We have 32 laps remaining and Hamilton is also heading to the pits.

1800 GMT: Hamilton has consolidated his place in fourth position and he has just recorded his fastest lep. Massa is speeding out in front of the field, but if it stays like this, Hamilton will be the champion.

1752 GMT: Hamilton moves one place higher as Vettel takes an early pit stop. The top five is as follows: Massa, Alonso, Raikkonen, Hamilton, Glock. There's 42 laps to go.

1745 GMT: Hamilton is doing what he needs to, Massa is also doing what he needs to -- but who is going to budge first? With Massa in first place and Hamilton currently in fifth, the title would go to the 23-year-old Briton. However, one mistake could decide the championship. The tension is certainly rising in the Ferrari and McLaren teams.

1740 GMT: Massa is extending his lead at the front, but Hamilton has returned to fifth spot with a sublime pass on Fisichella. It was a risky move with only the one racing line staying dry, but he pulls it off and keeps control. There are 53 laps remaining and the likelihood of rain is said to be diminishing.

1735 GMT: Hamilton makes a move and heads back to sixth with a clean pass. There are still some concerned faces in the McLaren camp.

1732 GMT: Massa and Hamilton do head to the pits, and most of the field have now changed tires. But, the change has been disastrous for Hamilton. He has dropped back to seventh. If it stays like this Massa will be the World Champion. We are eleven laps into the 71 lap race.

1730 GMT: With the track drying out and the lap times slowing, some of the cars have come to the pits to change tires. Will the leaders follow suit? Vettel and Alonso head into the pits, what about Massa and Hamilton?

1725 GMT: The safety car has gone and Hamilton has Vettel and Alonso on his tail. He looks to be losing a bit of ground on the leading three of Massa, Trulli and Raikkonen.

1720 GMT: We have had the safety car out on the track after the first-corner crash. It looks like Rosberg may have hit Coulthard and Nakajima has smashed into his side. Hamilton remains in fourth, Massa in the lead. In this position, Hamilton wins the title. But, there's a long way to go!

1717 GMT: It was a clean start at the front -- but at the back there has been disaster for David Coulthard. In his final Grand Prix, the Scottish veteran has crashed out on the first corner. It looks like a disappointing end to a great career.

1716 GMT: And we are away! It's a clean start at the front of the grid. Massa holds the lead andf Hamilton is nursed through the first corner by his team-mate Kovalainen.

1713 GMT: We are out on the grid and preparing for the green light. Are you buckled in for this? The crowd is screaming for a Massa victory... but, will it be the Brazilian or can Hamilton hold on?

1710 GMT: The doubt caused by the rain could be bad for Hamilton -- but it could be equally bad for Massa. A wrong tire choice here and they will struggle to keep up with the leaders. The cars are now back out on the track, we're not far away from a start.

1705 GMT: The rain has eased and the latest report is that the weather will hold clear for about 40 minutes. This leaves the teams with a difficult decision to make: wet or dry? We'll find out in a few minutes.

1658 GMT: Drama already! It is raining! The cars are about to head onto the track and we have a very heavy shower. It has caught everyone out -- they all have dry tires on -- and the start has been delayed. The teams are likely to put on wet tires here, and we'll be out on the track at 1710 GMT for the warm-up lap.

1655 GMT: Lewis Hamilton is strapping on his helmet. Felipe Massa is getting buckled into his car. We're almost ready to get out on the track, with the Formula One World Championship on the line. Can Lewis Hamilton become the youngest ever winner of this prestigious title? Or will he fall at the final hurdle for the second year in a row? We'll find out when the race begins in just FIVE minutes!

1640 GMT: We are just 20 minutes away from the race start. Here's a reminder of the front of the grid:

1. F Massa (BRA/Ferrari)

2. J Trulli (ITA/Toyota)

3. K Raikkonen (FIN/Ferrari)

4. L Hamilton (GBR/McLaren)

5. H Kovalainen (FIN/McLaren)

6. F Alonso (SPA/Renault)

1620 GMT: The latest news on the weather in Sao Paulo is adding a new dimension to the race already. It has been fine so far and the track is dry -- but thunderstorms have been forecast. Any rainfall could have a major impact on the outcome of this race.

1605 GMT: Welcome to you all, and thank you for joining us. We are just one hour away from the climax of the Formula One season. The race we are waiting for -- the Brazilian Grand Prix at Interlagos -- promises to be a thriller. Ferrari's Felipe Massa has qualified on pole position and needs a win or second placing to have any chance of taking the title.

The man he wants to beat, Lewis Hamilton, needs only to finish fifth or better to claim the Formula One World Championship title. However, after he managed only fourth position on the grid, the championship race is hanging in the balance.

Join us here shortly for all the action.