Thanks to Colbadiah777 for the following information:
If the player going for the win FAILS to reach one of the goals in time it will break their winning streak along with this the player losing cannot
quit out as this also breaks the winning streak.
Set up a multiplayer match and either setup 2 public slots and wait for someone to join and ask them to boost or set up a private match with either a friend or someone who wants to boost on the site
Then win 5 times in a row, the loser does not need to race but is recommended so they can learn the tracks.
The MP for this game is dead now so you can create a gaming session here