As it celebrates its 75ᵗʰ birthday, Vespa surpasses the milestone of 19 million units produced, including almost two million in the last decade alone | Piaggio Group
The gears of Vespa and Lambretta | Motorcycle Amino Amino
Vespa cracks 19 million unit milestone in 75th year | MCNews
What you should know before buying your first Vespa scooter - iVespa
Tech talk: How Vespa Automatic Transmissions Work | Moto Julia | New Orleans Louisiana