I rode a taxi in Japan only once, when I first arrived. From Haneda airport to Komaba. But this only once experience is something ill never forget!!!
I was surprised first to discover that the door opens automatically when the driver pushes a button, and closes automatically too. Inside, I thought that I am in a nuclear lab!!!! The taxi has more than 3 LCD screens!! Once I rode the driver entered the address I am intending to go using a keyboard. He only entered the zip code number, and to my surprise one of the screens showed Tokyo map, from above, with a green line that shows the path the driver should go through!!!! Thats probably using the Wi-Max technology - which we will see in Amman in 5 years-.
The map showed our current position, our destination and the path we should take, which is the shortest path ofcourse. While driving, the green line gets shorter the closer we get to the destination. It also dynamically changes if you take another route than the designated on, to show you the shortest path again after the route you took.
We passed through something like a toll. Will the taxi stop, I thought? No it didnt. It just passed through the tall and something like a bill came out from a device inside the taxi. I concluded that it probably connected with it and that was the bill to pay, without even stopping.
The driver doesnt talk with the passenger. He doesnt need to. All what he has to do is to drive, while wearing the clean uniform. Also, smoking is not allowed!
Taxis are pretty expensive in here, I think you can all now understand why :)