Some observations:
Nobody takes any notice of road signs.
Everybody exceeds the speed limit by a minimum of 20km/h all the time.
Cars almost invariably travel in tightly bunched packs, perhaps due to some kind of flocking behaviour or mutually assured destruction pact.
Sitting down at 60km/h is a lot colder than cycling at 20km/h.
My spine needs fixing or replacing, preferably with some kind of titanium alloy.
1000 yen (5 quid) gets me a long way.
Riding is fun! More of that, thanks.