Childhood Friend

I was riding a bike down a street.  It was the street I used to live on when I was young.  I was an adult now.  I went past the house where my friend used to live.  I could recognize the house because it had a stone wall in front of the house.  There was a guy coming out of the driveway in a funny looking car.  The car was flat on all the surfaces and had an engine in the back. The engine sputtered and backfired a lot.  Also I could see inside the car because it did not have any sides.  I looked at the driver and figured it must be my friend as an adult.  I figured I would follow him and talk to him.  The car was very slow but I could not catch up to it because of traffic and stop lights.  I finally caught up with him and realized he was much younger than me.  It turns out that he is my friends son and not my friend.