[meaty]

True with display sizes although I'm interested more in resolution than size.

My trip computer does litres per 100km. I drive a Citroen C5 and it has kph on it as well as mph. My satnav usually reminds me if I'm driving too fast (in kmh which is handy) and that results only in me watching out for speed cameras and the fuzz :)

I don't fly - I drive if needs be. I frequently drive around Europe as it's easier than dealing with flights and a damn sight more comfortable, reliable and cheaper than flying. I can drive to Leipzig from London in about 10-12 hours.