How has the design of the Piaggio Vespa evolved over time, and what are some of the key design changes that have been made?

The design of the Piaggio Vespa has evolved significantly over time. Early models had a more rounded shape, with a single-piece handlebar and smaller wheels. Later models featured more angular lines, larger wheels, and a split handlebar. More recently, the design has become more modern and streamlined, with features like LED lighting and a digital instrument cluster.