I had never seen anything like this until I came to Sendai. Roughly sixty taxi cabs all lined up in a neat grid at Sendai station. How many taxis could people getting off of the train need. I have personally never seen less than this amount anytime I’ve walked pass. You’ll notice that most of them have their lights on, meaning that their engines are probably running. So if you want to stop global warming or such, this should be you first target. The upside is you definitely know where to go to get a taxi.