In a haze of glandular output your palsied hands grope at the bloodslicked steering wheel looking for purchase. Too slow. You use your forehead to bang out a morse code signal for help on the horn. Not noticing that since the impact the car's horn has been blaring non-stop. Every time you press the horn down with your bloody face some kind of signal is crossed in the car's electrical system and the horn glitches. You bang out an inverse distress signal on the circuit bent sound system as your vision goes hazy.
You are fading from consciousness now, head beating gently against the steering wheel. The steady honk of the horn is replaced with the steady rush of blood in your ears. The sound of your body. It begins to glitch and stutter like the horn was. You catch a sudden whiff of something. Ozone and pizza.