Elio is already light weight and with hub motors requiring a much smaller battery pack......say 10 kWh with regen braking.....sized at 1/3 to 1/8 the normal battery pack and a 200 + mile range makes it feasible as a City Commuter option......and yes a more expensive option............and make it a a tilter too. I want one in the distant future after Elio becomes a household name. Elio may have to offer an EV Model to stay competitive in the market place as battery technology becomes more affordable along with increased range.You know the Volt is not an electric car, right? It's a PHEV that gets 380 miles on a tank of gas. And that the Tesla, while not "practical" for 90% of the population due to cost, does not have range problems at 300 miles/charge and is by any accounting a profitable success?
I think the "green" people will come on board faster than you think. With the light weight, outstanding MPG, and lack of toxic-metal exotic battery and no use of coal-generated electricity, the Elio is "greener" than any Pious could hope to be.
I do not think we will see an electric Elio in the near future. Or ever if Paul is as smart as I think he is. It would destroy two of the Elio's four fundamental advantages: Low cost and light weight. Batteries of sufficient capacity are either very heavy or very, very expensive. Take your pick. The tandem layout leaves very little room for battery packs. Consider the entire floor of the Telsa is a giant, expensive, exotic battery pack. Despite using the lightest battery material available - lithium - the Tesla still tips the scales at a Bentley-esque 2-1/4 tons! More than 3.5 times the weight of an Elio.
Someone will no doubt do an after market EV mod Elio.