In a glass and marble building just outside Philadelphia last week, the Baltimore Markets chain (25 stores) opened what it called "the world's largest supermarket." Inside the $1,000,000 air-conditioned building were such customer come-ons as a television lounge, haberdashery, glass-enclosed bakery, luncheonette and a fancy "cosmetics bar."
But it was at the check-out counters that customers got their pleasantest surprise. As they filed past the bank of 18 cash registers, their purchases were put on a soo-ft. conveyor belt leading underground to the five-acre parking lot outside. Car owners simply drove to the belt unloading point, presented their numbered sales...
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