There will be two new quest from cindy, one to gather tires and the king of the road (race quest).
After finishing both, 2 more races will appear near
1. Coernix Station - Cauthess
Check the map and you can see both areas will have a racing icon, finish them and achievement will pop. Thankfully, all the races are not hard at all in comparison to prompto's racing achievement. The races just have to be finished within the time limit and I did all the races first try even though I went out of course a lot of times due to bumping into rocks and trees. All the best and hope this helps
Any confusions do comment away