Driving is a skill which lets a retreating Squad avoid enemy pursuers. The skill is based on, and limited by, a Liberal's Agility.
Training this Skill
In practice, there is no quick way to train Driving. Someone is gonna have to grind it up, whether through University coursework or driving everywhere.
Bonuses to Skill
Certain vehicles are better than others. The Pickup Truck and SUV each give a bonus to the skill, but the Sports Car is by far the best choice for high-speed getaways.