"The fireman said that sometimes cars just catch on fire" lol, yeah, wtf is that supposed to mean?
So what was the actual source of flame, the spark which ignited this mess? Electrical failure, vented battery hydrogen, what? Does this recall-defect you mention cause any electrical arcing?
Just curious, what was the ambient temp outside between about 8AM and 10:30ish that morning? Do you live somewhere like Arizona where the concrete boils off the roads at noon?