> When they have no passengers, they still are driving around
You're ignoring the environmental impact of parking. Also, Ubers by and large aren't aimlessly driving around. That's taxis. (Where TNCs fail is in their deadheading costs [1].)
[1] https://www.cmu.edu/ambassadors/december-2021/pdf/bloomberg_...
> You're ignoring the environmental impact of parking.
Interesting - what impact? Driving around looking for a space? Parallel parking wouldn't seem to be a problem, unless you're not very good at it. :)
> Ubers by and large aren't aimlessly driving around
They drive to me, which by itself increases their driving for my trip by ~~~~~50% (I have no idea). I suppose in Manhattan, they are likely to be closer, but I'd guess that impact is more per time (stuck in traffic) than per mile.