Have you got a current driving licence? australian essay “I assure you that we will find out how this substance passed our rigorous internal checks and balances and design systems to make sure it never happens again,” said Powell, who’s sprinted down the lane in under 10 seconds more times than anyone in history. “My attitude towards doping regulations and testing is well-known and I willingly give samples whenever requested. This result has left me completely devastated in many respects.”