This is vaporware. VW are stuck. They are not able to innovate. VW EVs are always tomorrow, whereas actual manufacturers do deliver EVs now : Nissan and Renault besides Tesla.
You do realize that VW has been shipping and selling the e-Golf EV for many years now, and in good quantities? They're all over the bay area, and seem almost as popular as the Leaf.
Porsche pushes tech in the higher end cars, make it work well and reduce costs, then eventually ends up in audi's / vw's. Look at how porsche 919 hybrid is making power, its totally new.