Q: "A scruffy looking man is playing guitar and singing." Does this mean that "The man is driving a car."?
A: no

Q: "A woman wearing a blue winter jacket crosscountry skies with a small pine tree dragging behind her." Does this mean that "A crosscountry skier wearing a red winter jacket."?
A: no

Q: "People sitting in a vehicle." Does this mean that "Five people sitting."?
A: it is not possible to tell

Q: "a man doing tricks on a bmx bike" Does this mean that "The man owns a bike."?
A:
yes