Lewis Hamilton says his journey from working class to Formula One superstar would be impossible today as the sport has become a "billionaire boys club".
Hamilton, who is looking for an eighth world championship this year, famously grew up on a UK council estate in Stevenage. His father Anthony worked several jobs to fund Hamilton's junior career before he was eventually signed by McLaren, who gave him his F1 start in 2007.
Hamilton says the way the sport has changed in the years since means a similar story is impossible.