CNBC has video of micro-cars like the Toyota Yaris, Smart ForTwo, and Honda Fit being pulverized in 40-mph head-on collisions -- not with Hummers or Suburbans, but with their mid-size counterparts. The FourTwo goes totally airborne and rotates 450 degrees. The side-curtain airbags on the Fit are probably a good idea.
I canno' change the laws of physics, Cap'n! </scotty_voice>
I'm not against these cars, but neither do I think government policy should subsidize or encourage their adoption. People have to realize you can't have your cake and eat it too.