Trains

With 179 stations, nine lines and over 2.3 billion users each year, the Tokyo Metro is the heart of Tokyo’s public transport system. 
https://www.youtube.com/watch?v=xzkU6tmdImY

https://en.wikipedia.org/wiki/Sydney_Trains#Rail_Lines ,
http://www.sydneytrains.info/about/fleet

SYDNEY and its wonderful METRO
https://www.youtube.com/watch?v=WqlBywEmFBo

https://en.wikipedia.org/wiki/Sydney_Trains_fleet#Train_sets
8 car trains
https://en.wikipedia.org/wiki/Sydney_Trains_A_set

Train length	163.1 m (535 ft 1 in)
Car length	20.000 m (65 ft 7 in)
Width	3.035 m (9 ft 11 in)
Height	4.410 m (14 ft 6 in)
Maximum speed	130 km/h (81 mph)