Germany's ADAC (Allgemeiner Deutscher Automobil-Club) demonstrates in this video how the jaws of life can tear through and open up the BMW i3:
Via Google Translate from German:
"Cutting and spreading tools of rescue workers also work in a car made of carbon-fiber (CFRP). This has proved together with fire fighting forces in a simulated rescue operations including cutting experiments on a BMW i3 the ADAC accident research."
It's painful to watch the i3 get torn apart, but it's comforting to know that the traditional rescue tools work on the advanced materials used in the BMW i3.