Related Clues:

• Cry in place of a whistle, maybe
• Ride for hire
• Hail target
• Lyft alternative
• Call from the curb
• One waiting in line at an airport?
• Workplace for many a would-be actor
• Uber alternative
• Uber competitor
• Target of much urban hailing
• Hailed transport
• Certain fleet member
• Red wine, for short
• Rental car alternative
• Lyft rival