As a Firefighter we just recently underwent training specificaly for hybrid vehicles. Structurealy (sp?) they are no different than their traditional counterparts. The only real difference is that there is a high powered electrical source onboard. Awareness and education is key! In that spirit I offer up the following link that has emergency response guides for most all of the Hybrids out on the market currently.
http://www.sceneoftheaccident.com/wst_page16.html All of the guides are on pdf and are availble to be downloaded and refered to as needed. Enjoy.