MOTOR-RACING/Indian Narain Karthikeyan’s return to Formula One, along with Renault’s retention of Russian Vitaly Petrov and the imminent arrival of Venezuelan Pastor Maldonado and Mexican Sergio Perez, has put the issue of the so-called ‘pay driver’ — a man whose place on the grid is rightly or wrongly considered as much down to the amount of sponsorship he brings as talent behind the wheel — firmly back in the spotlight.