NSTG8R
Elio Addict
It will be easy to have more than one set of wheel fenders as EM has already told us that the open fenders would be an option and the fenders will be available in their catalog for future ordering. I expect this to be the most common body mod on the Elio as it will be relatively inexpensive and very easy for anyone to do. Also just about everyone who opts for some upgraded wheels will want to show them off under various styles of custom fender.
As you mentioned EM had to integrate the headlights for better aerodynamics however once sales really get moving it would not surprise me at all if body kits start becoming available as it is not supposed to be very hard to change the body panels. I can very easily see P3 and P2 style front ends as it would only require a new hood and front fender panels with a headlight housing, new headlights, and some extensions for the wiring. I believe we will eventually even see more extensive body modifications kits which attempt to change the entire look of the vehicle.
Nicely put Goofyone! Personally, I like the way the P4 looks, right out of the box. Gonna be my back-and-forth vehicle until I retire (8 years), saving me around $2500 or better per year in gas. Any modification will be purely to improve the mpg. Probably buy a second one in the future just to "play with" mod-wise.