That's impressive, man. In October 2008, I started biking after a gap of 6 years, and the speed I was averaging in the beginning, was about 22-23 kmph. Now I am doing it in 26-27 kmph.
But of course I have a sleeker bicycle now.
What I mean is that I like the idea of measuring average speed to gauge my efficiency and fitness. Can you give some pointers for bringing one's cadence up? What I do is to ride at say 23-24 kmph on a comfortable ratio for about 2-3 minutes and then shift to a lower ratio and keep trying to do the same speed.
Another way would be to set up a fixed gear bike and ride it. Fixies are great for cadence, as long as you have a reasonable ratio for starting off from rest.
I don't have a cadence measuring tool, but I have always had a habit of counting pedal strokes, sort of keeping time as I pedal. Another thing I do is hum a familiar tune, like Slip Sliding Away, or Hey Jude, and maintaining a cadence to the beat of that song.
I am sure your Italian methods will be more scientific than these. I am waiting, particularly for your training tips for increasing cadence.