You're Under Arrest! S02 E11 Major Panic on the Bokutou Line (1)

Miyuki and Natsumi have a roommate situation fight, and Natsumi goes off for a while. Miyuki meets up with some engineers who show her a new robot that can do heavy operations. In the meantime a major earthquake hits the area and the subways are shut down. Natsumi is on the subway by the way.