For this achievement you have to drive 465 km with an Omotion truck. You have 5 driving skill levels, the fifth level is the last level.
You can collect kilometers in missions and also in free driving. I have finished this achievement in around 12 hours, but you can get it quicker or slower based on your driving speed. Most of the time I drove around 100 km/h on the highway and 80-90 km/h on country roads.