Here's an interesting article that talks about some of the risks, and some of the training that's being done:
Fuel lines, brake lines, and airbag deployment lines always have been a concern, but now emergency personnel need to be cautious of the battery ‘cut points’ that may cause an electric shock
Full Article:Although the cars are 75 percent lighter, they are now 15 percent stronger, making it difficult for firefighters to cut through it to reach anyone trapped inside.
http://www.claimsjournal.com/news/natio ... 192487.htm
As the Ford Focus Electric becomes available, emergency personnel will probably receive specific training on that as well since battery packs are located in all sorts of different locations on different electric vehicles.