Hello,
Im sure this has probably been mentioned before but I think its a mechanic that could be greatly improve the game. Now these could be known as Ghost Vehicles that, upon requesting, could be airdropped in via Bowman. The custom helps could replace the ones at some rebel safe house upon arrival. There would be a cooldown of course and the vehicles could only be dropped in areas with enough room for them to land with all four (or Both) tires on the ground.