The tip off isn’t the washed-out colors. It isn’t the clothing or hair styles. Look closer, there to the right. Is that grandma? Homemade ramps. We used three-foot lengths of 2 x 4s stacked but otherwise unsecured. When the stack got three feet tall it was about 50-50 as to whether or not the whole thing would collapse prior to or during the jump. As an added challenge we often laid spectators out in the landing area. My best was flying over six kids.
The only objection from adults we ever heard was that were blocking the street. No helmets, no knee or elbow pads. Try that these days! No lasting scars, road rash is transient. It looks good for a week or so.