trade
Mercedes benz are offering after market comand units to customers for around £2000 on second hand cars and they are brand new units (well they are at Manchester), so baybrooks have the right idea get the customer to get the upgrade while buying the second hand car,have it fitted before you pick it up a very good service i think when they see how many people want comand and try to Mod it after buying
also one of the biggest cost to a business part from wages is the building you operate from so rent a corner of the Merc dealers, and be moble as well