Fuel efficiency

Made time to blip today, but kept missing the moment. Ah well, thinking about it on the way home, I spotted the answer right in front of me.

0.5L/hr at idle
42L/100km (6.7mpg!) accelerating from rest (to less than 10kph)
0.0L/10km (999mpg!) at 30-40kph - downhill.

All, I hasten to add, on a lonely road with adequate run-off.
Shake is vibration through the steering wheel.

Try again tomorrow.