Audi commemorated the 25th anniversary of its cult-classic A2 hatchback by converting one into an EV. The Audi A2 E-Tron is a one-off project undertaken by apprentices. It’s not the first such project; Audi apprentices previously converted an NSU Prinz 4 from one of the automaker’s predecessor brands into a speedy EV concept to mark 150 years of…