So it gets attention...and most accidents happen when people don't pay attention.
Once these become more common, it won't be a huge deal, so people will stop noticing them and accident rates will go up. Probably not by much, since you'd eliminate most of the driver caused accidents
The car is pretty eye catching: http://www.vibe.com/sites/vibe.com/files/styles/main_image/p...
So it gets attention...and most accidents happen when people don't pay attention.
Once these become more common, it won't be a huge deal, so people will stop noticing them and accident rates will go up. Probably not by much, since you'd eliminate most of the driver caused accidents