It just suddenly remember it, it just popped into my head. I had it last night, it was just a simple case of being in the middle of a city at night, becoming lucid and trying to fly.

I don't remember how I lost lucidity, I just remember at the time thinking; "OMFG I'm lucid, stay lucid, stay lucid, stay lucid...", before losing lucidity.

In both of my lucid dreams, I have been in the middle of the road, and the first thing I think of is running and flying. Could streets/roads be my dream sign? Or is it too general?