Create
50 Achievements
PS3
Road Trip
Drive 2,000 meters in vehicles within Challenges (not player generated Challenges)
18.9%
How to unlock the Road Trip achievement in Create - Definitive Guide
This is collective over your single-player challenge campaign. There is no need to try anything extra for this as it will come naturally. I unlocked mine mid-island 3.
Lots of challenges have vehicles; it will be unlocked in the course of normal game play.