So, for cars this looks like a dead technology because batteries are probably going to win. What about airplanes? They won't be battery powered anytime soon?
What I never really got is why Simon Tatham refuses to improve the original PuTTY. He must know it is used mainly on Windows (is anyone actually using the Unix version?).
His wishlist stated that tray support was tricky (http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/s...), but when I wrote the original Tray patch I was shocked to find that I could do it with a few lines of code (and I didn't have any experience with C or the Windows API)...