I'll clarify "good".
Excellent fuel economy.
Affordable purchase price.
Functional/reliable car (usable all seasons/weather, seating for 2 or more, parts available, some crash protection - basically not just a project of a college design team that only runs 30km/h and is made of foil/styrofoam)
It seems the Mirage does an excellent job of maintaining our basic status quo/understanding of the car, while pushing the boundary a little further. The Urbee (my home-town favourite) and the Elio (much closer to production) take another step in redefining what a car can be, and take advantage of the huge aerodynamic benefit of 3 wheels.
Who thinks the Elio will be a success?