I haven't seen anyone attempt to answer your question. Here's what I've found:
From 2016 NHTSA Quick Facts, in 2016 there were 37,461 fatalities in 34,439 fatal crashes in the US. That's 102 per day.
From a September 2012 report by the National Fire Protection Agency (NFPA) there were an average of 152,300 automobile fires per year in the period of 2006 to 2010. That's 417 per day.
Not far off the numbers given in the Electrek article. Maybe a bit too much rounding up on the vehicle fires, but maybe they were using more current data than I found.
