It Only Takes One Shot
You have taken pole position in One-Shot Qualifying.

When you play a season challenge, once you have selected your rival you will be taken to the qualification for the Grand Prix, and this will be "one Shot Qualifying".

You basically have one chance at setting a lap time and you must not cut corners, you must stay on the track.

You need pole position for this achievement, meaning you are the fastest car and to help you out you will see a ghost lap of the leading car, so if you beat the ghost you will get Pole Position.

You are able to use flashbacks if you need to and you can change the AI difficulty in race setting within the menus.