It's funny how people are so worried about electric cars catching fire, when they are carrying 100lbs or more of volatile gasoline right behind their child seat in the cars they've owned all their lives.
EV fires are very rare. They tend to start more slowly than gasoline fires and give you more warning to pull over and get away. In Tesla's case, the cabin is well-protected against fire penetration.
Even so, resist the temptation to go back to fetch personal belongings since Lithium-ion packs can explode suddenly and fiercely. This video has been posted before. Note that the cabin is not on fire, but the heat is intense.
All cars are flammable mate. They are all death traps. That's why you need to buy insurance when you get a car. Honestly. You could be the safest driver in the world, but that's not going to stop your car from acting up or some other idiot on the road for driving headfirst into you. And on that note, be safe everyone.