One possibility to help make this product get adopted sooner might be to use these at a future Grand Finals event. Rotax tried this tactic a number of years ago with their own RM1 DD2 kart. Found this link since originally posting this: http://www.kartsportnews.com/2017/09/29/rotax-goes-electric/
Like someone said previously, the infrastructure needed to handle all the battery charging would be significant and difficult to do under any other race event circumstances. I wonder if Rotax has pursued any R&D on other recreational products like a Sea-Doo or Ski-Doo?
At 287 lbs, even junior classes would be approaching a minimum weight over 400 lbs and 460ish for Senior. Not exactly nimble weight.
I figure this kart will end up in the $9,999+ range. The chassis is basically a DD2 chassis and those are going for close to $6,000+. Those batteries, electric motor and the high voltage speed control are going to be pricey and I would guess all this new technology to possibly be priced around the present Rotax engine packages.
All in all a neat concept and probably ahead of it’s time much like the RotaxMax was when it was introduced to karting back in the day.