How far fetched is the idea to use Super-Capacitors to take up the energy generated by braking and then slowly feeding it to the battery at a rate that it supports?

The energy density on super capacitors is pretty bad. If you imagine full power 200kW braking for 5 seconds that's 1 mega joule and at a best case 8 watt hours per liter you're going to need 35 liters minimum. Really you probably need to double that so you can float up and down and never fully saturate the capacitor as power inflow is going to drop as you get closer and closer to fully charged.

https://en.wikipedia.org/wiki/Supercapacitor

Thank you so much. This is finally the perfect tool. I am using a 160hz monitor and the switching times were driving me crazy. (The higher the refresh rate, the longer the animation takes...)

Third party remotes do work on most TVs, I use a Nvidia Shield Remote on my TCL over bluetooth for example. I cannot however turn the TV on using that remote. Having a dedicated Play/Pause Button is still worth it however.

You state this like an obvious fact, but it is only obvious if you either heard of something like this, or you've been through it.

From that point on I am sure he knew to do that. What's obvious to you can also just be your experience.

At least with the recent Pixels there's an option to have your phone listen 24/7 and tell you what music is playing. Probably difficult to distinguish this tower from a homeless guy sitting in a subway station listening to different music all day.

That app ("Now playing") is the same technology as Shazam but it's local, because this isn't actually difficult on modern hardware. It's the same technique the Pixel uses to notice that somebody said "Google" to it, again without needing a remote server.

Now Playing has a smaller database than Shazam does but the technology would work fine with a larger database if you wanted that, which for this application you might.

However, unsurprisingly Google did not give away the technology.