Sepang MotoGP Test: Jack Miller: ‘I s**t myself’ braking for turn one, slow corners ‘our main focus’ While traction control, bike geometry and corner exit are just a few main areas of focus for Jack Miller on day-two of the Sepang MotoGP test, the Australian will also be keen to avoid moments like he encountered on his first lap after saying “I s**t myself thinking I was not making the corner."