Do Japanese taxis have decent leg room for the back seats? If it is the size of USA version of Toyota Camry or Honda Accord, the leg rooms are less than ideal. I consider the shot gun (the front passenger seat) as the best seat in the car (unless you are in the some war zones).
What's up with #3 guy on that taxi seating map? In US, we call it a ***** seat (sorry for a coarse choice of word). That seat is very uncomfortable. If I have to take #3 seat, I will demote myself to #4 to set in a shot gun. Of course, after the ride, I will request my boss to put me in my original ranking.