I can't even imagine. Maybe they spotted a meteorite -- ;-)) Yes, this definitely qualifies for a street shot I would say and a great candid + timely catch capturing them both looking the same way.
Why would you think it doesn't qualify? Just because your street happens to be beautiful to look at and not necessarily the typical gritty image we have in our heads. This is a wonderful candid. You do really wonder what they were looking at! xx