I don't really know why, but the thought of my (elderly) mother using this made me laugh almost as hard as the El Risitas guy[1]. I adore it, and it also should never ever be used in any car GPS scenario. It's far too distracting, and puts far too much emphasis on the places you are not going.
I could see it being useful for a more exploratory style of map, however. Games like Pokemon Go come to mind as a place where this would be pretty cool.
> far too much emphasis on the places you are not going
I have this issue with literally every modern nav system. They all make their fundamental display a line marked on a map, and most of the information on that map is irrelevant.
More than 20 years ago I had some kind of Verizon flip-open phone with a QWERTY keyboard. No idea what model, but it had this fabulous nav interface that just showed big arrows showing your next two turns and a schematic diagram of what the next turn would look like. I wish I could get something like that, but with Google's data as the back end.