Possible Clues:

• The other way it'll be a drag if one can't take any more
• Get gas
• Pump purchase
• Give the boy, by the sound of it, as much as he can take
• Motor sport's influence mounting -- it's to do with fuel
• Do it at petrol station to save tears?
• Occupy (some time)
• Looking back, it's a drag if it's something to do in the station
• Sounds like a boy that will make it to the top