Related Clues:

• Use, of a sort
• Distance
• Odometer reading
• Usefulness
• Car rental info
• Used-car datum
• Odometer marking
• Datum in a used-car ad
• Statistic in a used-car ad
• Sales rep's reimbursement, maybe
• Benefit from extent of travels
• Distance travelled
• Usefulness, so to speak
• Car ad datum
• Travel allowance