Here is the full list of all 14 Pixel Driver achievements.
Unlock Car 8
Unlock car 7
Unlock car 6
Unlock Car 9
Unlock car 5
Unlock Car 10
Unlock car 2
Unlock car 4
Reach distance 1000
Reach distance 1250
Reach distance 1500
Unlock car 3
Reach distance 500
Reach distance 100