Tortoise and the Hare step by step video guide!You don't need to win the race, just complete two races, once each in the appropriate car, and despite the name of the achievement it shouldn't even mater what car your opponents are using.
Note: Again, You don't need to win, just complete the two races in PVP' as a 'Showdown' Races (Once in an X class car, and once in a D class car).
For those posting negative scores can you please let me know how the guide can be improved, as I can use that information to hopefully make better guides in the future.
Before posting a negative score because it didn't unlock for you can you please check the achievement is not stuck unlocking, and if that is not the issue retry the event. When doing the second attempt double check you have set it up as 'PVP' and set it as a 'Showdown' Race as these are specific requirements to unlock this.