I would find this slightly useful, I live in Madrid. For most of my trips I take the metro; I have two lines nearby, and they are frequent enough that I just show up. But there are a few parts of town that are just not well connected to my place by metro. If I want to go to Atocha, Cibeles or Piramides, the bus is better. But I have three buses that take me to each of those places, and they show up every 25 minutes. If I'm going there, I want to know which stop will have a bus soonest.
I also live in Madrid. Many years ago, wrote a bash script that downloaded the real time data for the bus stop nearest to home from the EMT website and read out loud the minutes for the next bus with festival.
We had a keyboard next to the couch, many keys were shortcuts to execute commands like that one. So it was a matter of pushing a key and listening.
