You can definitely hypermile it, but you aren't going to see ANYWHERE near what you're getting now. Case in point, I've also hit 100%+ above EPA with my Paseo as you have with your Civic. But, the best I'm able to do with the Prius is ~25-30% above EPA. With an EV you have an even more inherently efficient vehicle, so there is less room for improvement. My guess is 15-25% is going to be difficult to achieve, but doable. I'd sure love a chance to give it a try.