Based on the context and the answer, generate a question. 

Context: With the car jacked up about 75 % of the way needed to get the full - size tire off , a random big athletic guy came up out of nowhere and asked if I wanted help . I said " If you can help , please , I ' m about to have heatstroke here . " He cranked the car the rest of the way up , swapped the donut for the flat , and let the jack down . He then took off , refusing anything more than a " Thank you " for his assistance .

Answer:

He is charitable .



What may be true about the athletic guy ?