So I am a cyclist who does this for a hobby and I tend to ride ~180km a week. Today on a normal morning ride, someone opened a car door facing the street right into my path and went for a little dive. Considering there weren't any noticeable damages to the bike or myself I just said to the guy I was ok and he walked along. Who was in the wrong for the situation from an unbiased point of view and should I have gotten his details? Thanks in advance.