I read about this one. Interesting, but it worries me at the same time.
I worry that suddenly, you are going to have lots of these car being stolen - not by evironmentalist, but by those that want to bolt in smoggy race motors into the cars because of their lightness.
I see this a lot with Civic VXs. It's hard to find one that hasn't been modified in some way.
While 48 MPG may seem environmentally friendly, vehicles can still be major polluters yet still get great gas mileage. ( An example being scooters )
Here is yet another Insight drag car. This one is not street legal ( obviously ).
Note the full grille block and extended deck lid. ( Also note how that the deck lid extends outwards versus the traditional spoiler that slants upwards for more downforce.
( This is similar to the stock CRX - the curve of the back end ended in an almost horizontal decklid .) But that is all off topic .........