The octagon spirit: Some of us have it. Some don't (Pity!) Where and when does it happen that one becomes an MG addict? In the driveway of and adventurous neighbor, the MG lurking - ready, willing and able? In that very first moment you open the taps and feel the surprising surge of power, the MG fairly begging to be driven - hard? No matter. This much is certain: the urge to possess a car of the octagon marque is overpowering and long-lived. (Some devotees have coveted an MG since '48, when we started the whole sports car Thing over here.) What is there about an MG that quickens the pulse and fires the blood? The race-tested 1798 c.c. engine? The firm racing suspension? The positive rack and pinion steering? The twin carburetors and four-speed stick shift? The huge non-fade disc brakes? The interior, perhaps - with its roll-up windows, bucket seats, English leather upholstery and drum-tight convertible top? All of it is want-making, of course. But all of it is by no means all of it. (Add an envelope body of modern line - yet unmistakably MG. And engineers know what they're about. And the hard-learned lessons of the race circuit. And above all, the fierce desire to have a real sports car under you.) If you have the octagon spirit, the lastest of the breed, an MGB, is waiting to pleasure you. If you don't have it, we're dreadfully sorry. The octagon spirit: The irresistible force of a highly movable object