In part 1 of Compact Carbine Deployment with Bill Rapier by Kit Badger, he shows how to deploy a compact carbine from a vehicle... "In this video with Bill Rapier, of AMTAC Shooting, he goes over some of the important parts of Compact Carbine Deployment from a vehicle.  More and more people are carrying compact carbines or AR-15 pistols which provide a massive increase in capability over traditional pistols.  But it is important to know how to deploy these weapons, to include from vehicles, which people spend a lot of time in."