I don’t know much about this DVD (If you publish it, send me one, and I’ll write a review), but I think the title translates to what I’ve put in the blog post.

Here’s Google Translate’s attempt at the (Italian) Amazon translation… “After the war almost all automakers tried to develop new models of scooters, but the only one that was able ‘to develop a vehicle competitive with that of Piaggio was the innocent with his scooter. the success of the two models proceeded hand in hand and development for all the fifties and sixties. I was born so ‘categories of Vespa and Lambretta, constantly competing with each other, each willing to swear on the superiority’ of their vehicle to the antagonist.”

It runs to 52mins, and has English and Italian subtitles. If you want to take a chance (it’s only £8, at the moment, anyway) here’s a link to the DVD below;
Lambretta – Ascesa E Declino Di Un Miracolo Italiano – On Amazon