The Formula 1 season will include a race in Vietnam come the year 2020.

The northern city of Hanoi will host the South-East Asian country's first ever race, with a multi-year deal signed.

"Since we became involved in this sport in 2017, we have talked about developing new destination cities to broaden the appeal of Formula 1," said F1's chief executive Chase Carey.

"The Vietnamese Grand Prix is a realisation of that ambition."

It's certainly an interesting move for F1 and there are rumblings from Liberty Media that the season could even expand to 25 races in the near future.

How would that move go down with the racers? Well, judging by Lewis Hamilton's reaction to the news, not very well.

On the eve of the Brazilian GP, Hamilton said: "I am not going to be here if it gets to 25 races, that's for sure.

"It already feels like we are on race number 25 this year, so I don't think more races is going to be a good thing.

"I am someone that really loves racing, but the season is long, it takes a big commitment from all of us, and it is a long time away from our families.

"The seasons are getting longer, and the off-time is getting shorter, so from a competitor's point of view the turnaround is short.

"You start preparing for next year as soon as the season is so done, so getting your mind tuned is very difficult."

The newly-crowned world champion is certainly not fond of the move.

Hamilton is looking for only his second win in the Brazilian GP on the weekend and dismissed claims that he will step aside for Valtteri Bottas.

"The team are not going to make that call," Hamilton added. "I haven't asked Valtteri, but I don't think he will want that.

"He wants to win in his own way."