On the eve of his home grand prix, Felipe Massa has likened Formula 1 pay-drivers to prostitutes.

After eight years with Ferrari, the Brazilian will switch to Williams after this weekend’s 2013 season finale in his native Sao Paulo.

It was thought that Massa, 32, was bringing some Brazilian sponsorship backing to the seat currently occupied by the heavily PDVSA-backed Pastor Maldonado.

But Massa insists that he will remain a “professional” racing driver in his own right at Williams.

“For all that I’ve gone through, and everything I’ve achieved, it click here for more