I think the issue is that when people leave any said device
in a car UN-attended and Charging (car off-hot)
sorta along the lines of leaving a dog in a car
if you have good equipment and have car running (attended and cool)
I don't think you would have a problem IMO
no expert, but it is how I go about it... YMMV
I vape with a passthru USB while driving and also allow to charge
it all gets unplugged when I'm not in/using vehicle
Also, if I left a BATT in vehicle while I was gone (if hot) I give it time to cool down , or what I mean
don't plug in an excessive hot Battery
