Earlier quoted context omitted.
That was my first reaction. If I was pulled over in Ireland with no dash the car would be impounded . And the speedometer is great but what about the other info? Fuel gauge? Mileage? Battery Charge? Engine faults?? Geolocation won't help with any of those. That said I do love the PWA approach to things and I think more people should embrace it. Just... not for this.
I'm comfortable with driving without any of those things -- my motorcycle, for example, only has a speedometer and a non-resettable odometer. (It's like that from the factory. Many street-legal motorcycles are similarly equipped.) You know how much fuel you have by knowing the capacity of you vehicle's tank, how many hours or miles you have driven, and your pre-existing (or found on the internet) knowledge of you veh…
I just do what I've done with every bike, reset the trip when I fill.