I will grant there are better denominators, but I wouldn’t say it’s useless, especially if we could assume we’re comparing similar services to each other (e.g. city rideshares), and particularly when there’s no denominator at all currently provided.

But sure, if we could get data broken out by road type, location, weather conditions, time of day, who’s at fault, etc. then we can obviously build a much more robust comparison.

I can just imagine the waste involved in trying to game that statistic. Fleets of driverless cars caravaning back and forth across Nevada just to increase the denominator.