Horn:
This isn’t something we’ve come across before, might have been an issue with the vehicle you took the test ride on. Will get it checked on AtherSpace vehicles.
USB Port:
I agree that USB port is not used only while navigating, and can come in handy at times when the phone’s battery is low. We haven’t seen a real need for it yet, but if there is a strong requirement, we can add it to future versions. The vehicles in immediate production will not have it, however.
Display- Incoming Calls:
This is something which we really wanted to add, however, with the current hardware it isn’t possible. To have this feature, it requires a local connection using Bluetooth or Wifi, since neither of those is available today, this feature cannot be enabled.
User’s phone connects to the vehicle via a data connection, which cannot support this feature.