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At first glance, coming right at you, its face comes to life, the way a familiar comic strip character jumps off the page: Its sweeping, cream-colored roof forming a widow’s peak above a set of divided, recessed windshields; below, wings of silver embrace its centered headlamp; a ribbon of orange wraps around its muscular, green body, a body that glides effortlessly, seemingly on air, inches off the pavement; its long trolley pole sliding along a 600-volt wire high above the street, catching magic. Chicago’s Green Hornet, riding on bands of steel that crisscross the entire city, clangs its bell and coasts to a stop.
— Shaping the Story, chapter 11

Or, if you prefer, "light-rail";-) The last surviving CTA Green Hornet of a fleet that once numbered 600-plus trundles around a short loop at the Illinois Railway Museum in Union. The Chicago versions of these cars, known as PCC's, were unusual in that they had three sets of doors.