Possible Clues:

• Amusement park ride, perhaps
• George, Oscar, Kay and Arthur driven to the limits by a boy-racer
• Sanction a run in souped-up car, a small one for racing
• Vehicle certainly requiring good skill to corner?
• Drive Ford model right into another vehicle
• Small racing car
• Small single-seated racing vehicle
• Kind of track
• Gee! Agreed crafty activity appeals to the boy-racer
• Mediocre craft behind good racer