O.k., it's easy to talk, if you are living thousands of kilometers away, in an area, where such fires are improbable, because ground and weather are too wet, but I must say, that I probably would have saved the car at first.
I was wondering a bit, why this couple hasn't saved not more like that car, no valuables and so on. If I would live in an area, where such catastrophes are likely, or it even has burned in the counties around, I would have our prepared our cars ready for escaping (full tank of gas, incl.spare tire and tools, keys ready to hand, parking with the nose to the street etc.), and I also would have loaded the cars with "refugee-luggage". I would have packed it even some time, before the dangerous sitiation would come closer.
Perhaps you will lough, because my thoughts are sound like "typical German", perhaps they are caused by my work in an insurance-company. Since the years of work over there I have the manner to check (just for a few seconds inside my brain) houses for their "PML" (Probable Maximum Loss = how possible would a total damage). This PML-manner I have about fire (material substance, flammable things around, can a fire inside destroy the whole house, etc.) and about water (if the streets are flooded, how big is the chance, that the house runs full, is it higher than the ground level, how are the cellar-windows, etc.) and even about burglaries (what kind of locks, quality of doors and window, etc.)
About "typical German": my grandmothers have told me, what things you always have with you as an refugee, how to pack the luggage, how to store them "ready to hand", etc. And that's better to sleep in your clothes in emergency-cases, etc.
They made their experiences during the World War II. One part of my family escaped from the Soviet Army in the former far East of Germany in Jan.1945, the others have survived the bombardements of the Ruhr-area between 1942 and 1945.
My grandma, who had survived the bombardements, had told me, how to try to save a house for bomb-damages (opening the windows, tape-stripe over the glass) and that every family-member had learned his own task. After the all-clear-signal my grandma had to run up the stairs and check the top floor, if there are some dud bombs or fire-bombs with time-fuse. If yes, she had threw them into the goldfish-basin in the garden.