1. Due to the need to accelerate, HSR is only really good for 100 mile+ trips, beyond the range eVTOLs are being proposed for.

2. Hsr only goes point to point, stops and door to door transport isn’t really feasible, and those last couple of miles take a lot of the time.

3. HSR is extraordinarily expensive in infrastructure costs and most city pairs don’t have the passenger volume to justify it.