1. One can argue that Tomo lives by the Hagakure. "When the time comes, there is no moment for reasoning... simply become insane and desperate... A real man does not think of victory or defeat. He plunges toward an irrational death. By doing this you will awaken from your dreams."
("The way of the [Tomo] is in [dumbass]")
2. Speaking of Yukari's driving, one of the best gags in "Sketchbook" is that they set you up to expect that the advisor is a Yukari-style driver and then it turns out she drives ultracarefully and forgets to take the handbrake off.