I remember my dad put a preorder deposit in for this when I was in high school, with his idea being it would be the perfect vehicle for me to commute around a college campus several years later. I am now approaching 30 and from what I recall of Elio's website when I looked at it then, it looks like they've made a lot of progress in offering the vehicle in additional colors.
technically they've added an electric option, and postponed the gas option indefinitely. Part of the reason it isn't popular enough is that there isn't enough demand. The gas option could use an opposed piston for even better fuel economy than 84mpg.