The whole thing is a house of cards. Not saying they don't have their purpose or place, but they are definitely not what a certain demographic makes them out to be.
Saw a news cast just yesterday of a fleet of these things from a delivery company indoors all on chargers and one went up in flames. It took 80 fire personnel 4 hours to drag it out. Douse it for 45 minutes with water then to put it in a open dumpster and then bury it with dirt. Said it would smolder for at least 3 days. Warehouse and other vehicles saved.