Bring the tread back from the dead. I would love it if someone was able to put a digital speedo in the LCD screen between the gauges. I dont need it, but I want it and would pay for it.
I have factory Nav and used to have a cheap GPS in my old car that showed the digital speed. My wifes car had HUD, i thought that was stupid, but now I love it.
I dont want a add on or phone app, I want it in the dash.