Really? From what i know, you just need to be great in drifting or racing, than simply advertise that skill (using videos, events, celebrations, anything to publicise the skill). Nowadays its easy to publicise and advertise with little or no cash involved
after that, just send some proposals to big companies or businesses. if they're impressed by your skills, maybe they'll sponsor you. and then you can grow your career from there
lots of big companies are involved in racing nowadays, mostly F1 i think