It’s hard to get a sense of the full scale of Miller Motorcars in Greenwich, Connecticut, even walking past a row of Rolls-Royces parked in front of another row of Rolls-Royces.

It is an official dealer to Alfa Romeo, Aston Martin, Bentley, Bugatti, Czinger, De Tomaso, Ferrari, Maserati, McLaren, McMurtry, Pagani, Pininfarina, Rimac and the aforementioned Rolls-Royce. A purple Phantom on 22s gleams in the sun, in case someone walking in might want to drop half a million dollars on it.

How does Miller Motorcars keep all these different automakers in stock? “We don’t think of it as competition,” says Evan Cygler, Sales Executive. “All are a niche.” That works for the kind of buyers who find themselves at Miller Motorcars, self-made entrepreneurs as well as captains of industry in banking and real estate. “We have customers who have an Aston Martin and say ‘I’d love to try a Bentley.’” Or a repeat customer might return and “maybe they’d like to try a V12 this time.”

Miller Motorcars started in 1976 in West Hartford before resettling in tony Greenwich. Its initial specialty was Mercedes-Benz in what was a boom time for both official and gray-market imports. For all its stature, it has remained a family-owned business. Its founders are still in the office every day and even keep score for the employee softball team.