A cycling buddy has just ridden from Blackburn to St Ives and back using nothing but Google Maps on his phone. He downloaded a “cycle” route every morning to his destination then switched off the screen, wore one earpiece and set off. The phone guided him at most of the junctions, with an occasional anomaly, and took him down some delightful routes. He says it was only using data at the point where it downloaded the route and the rest of the time was just using GPS.
I’ve just asked it for the cycling route to my home and apart from being wildly pessimistic about the time, it has chosen a good route, although about 3 miles longer than if I drove.