I like what I see here, except maybe for the ICE powerplant. I would like to see an engine a bit more mainstream with known reliability. Something like the 1.5 Toyota Yaris engine, or the the Honda fit engine.
The 1.5 Honda Fit L15 engine is very much a consideration. I am impressed that the L15 has the direct injection incorporated into the engine, I think it's the only engine in the world like that. It means no separate very high pressure pumps and lines to deal with.
But, baby steps first, the Elio was a 1.0 so that's where we start from, and that's what I am willing to afford to develop at the moment, and it seemed to suit 65,000 people beforehand :-)