I defer to the axiom, "WWVWD" (what would vw do) they have made 2 ground breaking cars, and the first sounds like a ringer for your deal The L1. The second is a more marketable side by side seating version XL1. Look to these for cutting edge inspiration.
Of course if they ever want this to sell in the US, they'll need a SUV version with 24" Rims and market it as the XXXXL1000. Anybody got a connection with VW here?? I think I have found out what I now must do.