As is important to note whenever these sorts of stories pop up, gas-powered vehicles catch fire every day. And, after the initial flurry of reports, it sometimes turns out that the advanced powertrains were not to blame (see here or here). That doesn't mean anything in particular about this case, but it's worth remembering. As the local fire department spokeswoman told the News Press, "Whether it's a car or a toaster, everyone should follow the recommendations put out by the manufacturer. I can't tell you if that was the case here. We don't know."
*UPDATE: As readers here and elsewhere are pointing out, it looks like the "charger" was for the car's 12V battery and that this was a gas-powered Smart, not an EV. Until we know more, file this with all the many other ICE vehicle fires.
NBC-2.com WBBH News for Fort Myers, Cape Coral