From the National Fire Protection Association:
"Collisions and overturns were factors in only 4% of highway vehicle fires, but these incidents accounted for three of every five (60%) automobile fire deaths."
Also about 152,000 car fires per year.
17 fires per hour! One ignored statistic here, the gassers are burning up much faster then electrics thereby the electrics are gaining road share at a faster pace then production numbers alone show.