Put player, put empty cars, armored cars and tracked armored (I tried with Hunter, Hunter HMG, Ifrit HMG, Strider HMG, armed off road, Marshall, Gorgon, Mora, M2A1 Slammer).
Do not set damage, only destroy you parts of vehicles!!! It is importat because when you set the damage the repairing work normal.
Put along a direction all the support vehicles and pods for repairing.
Shoot only the tires, or only gun-turrets, or only tracks and try to repair. In most cases it not work. After that shoot another part of vehicle, make combination of wheeler/track with gun-turrets and is probably to work but even so not in 100% cases. The trick is not to destroy entire vehicle so choose with care the weapon. I used rifle for tyres and little turrets and gun from Gorgon for big turret of M2A1 and the tracks of Mora, M2A1, Panther.