Related Clues:

• Medallion site
• Sight at a station
• Airport waiter?
• Checker, perhaps
• Subway alternative
• It has a horn and charges
• El alternative
• Hack's vehicle
• Its business is picking up
• It might make a career in the city
• Passenger vehicle
• DeVito sitcom
• Travel across a tarmac
• See 56-Across
• Rainy night quest, perhaps