Task: Explanation
Input (English): The STP-Paxton Turbocar was an American racing car, designed by Ken Wallis as the STP entry in the Indianapolis 500. Question: What was an American brand and trade name for automotive aftermarket products entry in the Indianapolis 500? Answer: STP-Paxton Turbocar
Output (English): The STPPaxton Turbocar was an American racing car, designed by Ken Wallis as the STP entry in the Indianapolis 500.