The girls were looking for fun, riding in the car. Sometimes they got themselves excited. Apparently they wanted a new sensation, so they offered a threesome to a strange young, handsome guy. After some persuasion and conversation, he agreed and went straight to work. The girls hooked up with him, gave him blowjobs, rolling on top, while two were fucking, the third fondled the couple.
The young have a lot of energy, but little experience, the mature situation is the opposite. And judging by this homemade porn, experience is much more important than the physical conditions: take your time, with feeling, with thought and consideration, the two of you to orgasm! Guaranteed!