http://www.greenhybrid.com/wiki/inde...ape_Hybrid_FAQ
9. What about that battery?
...There have been rumors about rescue workers who won't rescue people trapped in hybrids, and how hybrid power lines make the vehicle unsafe in an accident. These are false. In the event of an accident, the battery disconnects, and the power lines aren't likely to be anywhere even remotely close to where cutting needs to take place to rescue you, and even if they were, they're clearly marked to let rescue workers know. You're more likely to die because of the gasoline or the air bag than the hybrid battery.
You can read the Emergency Response Guide yourself or show it to them, the same one that rescue workers train with as well,
http://www.motorcraftservice.com/vdi...ide-escape.pdf (Thanks to Walt PA for the link,
http://www.greenhybrid.com/discuss/f...se-guide-9292/ )