Rosberg: I've never had so much fun racing

Runaway championship leader Nico Rosberg is heading into this weekend's Russian Grand Prix weekend acknowledging that his winning streak cannot last forever, but at the same time relishing every moment on top of the world

"I'm just trying to soak up and enjoy every moment," said the Mercedes driver, who has won the last six grands prix on the trot and is leading the 2016 world championship by 36 points.

"I've never had so much fun racing in my career," he told Welt am Sonntag newspaper ahead of the Russian Grand Prix weekend.

Keke Rosberg - Nico's father - and 1982 F1 world champion also acknowledges the 30-year-old's extraordinary run, "It's going really smoothly for Nico."

"In the last six months alone, he has won more than I did in my whole Formula 1 career," the low-profile Finn, 67, told Bild.

But Nico warned that the winning streak cannot last forever, "Put it this way. I'm certainly not looking forward to it, but I know that the day will come, because nothing is forever.

"What is important is that I am happy- the car is great and at home I have a great wife and a healthy child, and for that I feel great gratitude," Rosberg added.

He admitted, however, that he is less happy with the overall situation in F1, with political turmoil holding up much-needed reforms for the good of the sport, "The way the system is at the moment cannot go on."

He stands firmly with the GPDA, referring to the fact that Bernie Ecclestone recently called outspoken figures in the F1 drivers' union "windbags".

"If we are called windbags, it means at least that someone is listening," said Rosberg. "Of course this is not a compliment, but before we were not even asked for our opinion."