This is a common technique used in videography to reveal a subject in the foreground or maybe reveal a subject in the background. Just like we have right here, you can use also techniques in post production to ramp up the speed or maybe even slow it down in order to reveal exactly what the subject or your video is, and in order to achieve this kind of effect, you are going To use the gimbal control on the side of your controller and slowly move the camera up or move the camera down to reveal your subject. This can be done in an urban environment.

https://www.youtube.com/watch?v=X3IiXHYGER4