Generally these are done in coordination with a sewer cleaning truck at the next manhole in the pipe. Very common for them to stay on the phone with each other
That certainly is just a Sewer TV inspection van! I have a hand in writing some of the software that is run on these and processes the videos that come out of them. They all have rack mounted PCs and a monitor with a joystick to control the crawler that goes in the pipe.
If you are ever in Portland, Next Level Pinball Museum is bonkers with over 500 machines. About half of them are pinball machines and all are in top notch condition. Portland in general has a huge pinball scene with several large arcades in and around it.