scratch (someone`s) back
to do something for someone in the hope that they will do something for you
"You scratch my back and I`ll scratch yours," the customer said when we talked about the new sales contract.
The Best Bulletproof Cars
RollsRoyce Phantom V1 Limousine
Having a very exclusive clientele does mean RollsRoyce is a little reticent about giving away too much information on exactly what is used in their cars to protect the rich and famous that travel in them. Then again, knowing all their cars are made bespoke it is a fair assumption it will kit its vehicles out with whatever the customer wants.
From the very early days you could opt for an armoured Roller take this Phantom V1 Limousine. Even today customers can specify their longwheelbase Phantom with allround Kevlar armour, a pair of matching 18carat gun mounts or a diamond encrusted pepper spray holder.