Again, "no contents beyond whatever normally comes as safety equipment" means no tools, so whatever you can lever off or smash with the tire iron is about it. EDC isn't part of the exercise.

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Glass from mirror or headlamps: small cutting edges. Safety glass is useless by design, so leave in place as shelter, solar collector, and stationary signalling device (flashes when sunlight catches it).

Reflectors from lamps or headlights: sun-driven firestarter using parabolic or fresnel lens, possible night signalling in bright moonlight.

Spark plugs: smash tops off for a ceramic sharpening stone (for the knife you don't have)

Antifreeze (glycol): poison small animals. The meat should be okay, but toss the head and guts.

Tires on alloy rims: may be light enough to have some positive buoyancy. (Steel rims are said to be neutral or sink.) Lash together with wire and undertake Titanic deeds on the briny deep.

Airbags: hat, clothing, moccasins, kite to get attention, loincloth, hot air signal/aerial balloon. Whether you can get them out without blowing up the high pressure cannister and gassing yourself, I don't know.

Vinyl from seat backs: rough waterproof clothing or groundsheet, protective mitts/moccasins/wrapping for hands or feet, pouch for foraging, fabric for snowshoe frame.

Airbag cannister: throw in fire (and run, baby) to generate signalling boom. You probably don't want to use it for cooking given the very toxic contents.

Seat belts: hammock to get you off the damp/bug-infested ground, tow/winch strap (overhand knot will hold), belts and pouches, material for crude fishing or bird catching net, rope ladder to get into tree.

Metal tongues on seat belt buckles: good steel, may take a cutting edge with lots of work and patience.

Resistor board: uses resistors to drop voltage and control speed of cabin fan. Will also drop voltage from the car battery, possibly to a level where you could charge a cell phone or other small battery.

Aerial: skewers for fishing spear, drill for tool construction.

Windshield wiper frames: skewers, fish hooks

Speakers: contain strong permanent magnets to give you a crude north-south line, or magnetize other iron/steel objects.

Car hood or trunk: if you can twist it off, a crude sled to transport stuff on low friction surfaces (e.g., snow).

Windshield washer tubing: tube to blow coals into flame (may have some methanol in it, so rinse a lot and don't use to ingest anything); tourniquet if you really need one; crude slingshot