Related Clues:

• Shout to a cabbie
• 'Hurry up'
• "Hurry!"
• Words from a hustler
• Go faster
• Order appropriate for 20-, 28- and 44-Across?
• "Hurry it up!"
• Fare order
• ''Get the lead out!''
• 'I haven't got all day!'
• "Hit the gas!"
• Make a start
• Get a move on!
• Begin work in earnest
• ''Hurry up!''