 We were not crazy about the design (little more room in the trunk please! - and low rear view visibility) BUT  if you are concerned about exposing your kiddies in the back seat to high - quite arguably harmful levels -of electromagnetic radiation and you want a hybrid, then Prius is the car for you.  We measure very safe levels in all parts of the car - with only slight raise (several seconds) while breaking.  We found very unsafe levels in other hybrid cars we tried and that's why we got a Prius.  Toyota obviously has taken precautions to minimize a health risk - even one not generally talked about.  Wow.  How often can you say that about a big company! Way to go Toyota!