Season 1:
Hastur: think you're gonna get across that (the road on fire)? There's nowhere to go.
Crowley: let's find out.
Hastut; wh- why are you driving? What- stop this thing.
Crowley: you know the thing I like best about time? Is that every day it takes us further away from 14th century. I really didn't like 14th century. You'd have loved it then. They didn't have any cars back in the 14th century. Lovely, clever human people inventing cars,and motorways, and... Windscreen wipers. You got to hand it to them, haven't you?
Hastur: stop this! It's over! You're doomed! You hear me, Crowley?! You're doomed! Whatever happens, doomed!
Crowley: see? This day's already got better!
[...]
Crowley: you are my car, I've had you from new. You are not going to burn. Don't even think of it!
This scene is so symbolic and revealing. Hastur says, "You're doomed", " There's nowhere to go". He tells Crowley that he won't make it across the road of fire, a symbol of a long, painful, impossible path. He tells him that he's doomed, that he should give up.
But Crowley doesn't give up.
He puts his foot down on the gas pedal and says, "Let's find out."
Even though he's terrified (his snake eyes taking up almost all of his eyes, showing just how stressed and afraid he is), he refuses to surrender. He keeps going. His faith is stronger than the fire, stronger than the burning Bentley, stronger than the risk of discorporation itself.
That faith comes from knowing that Aziraphale is alive and waiting for him. In many ways, Aziraphale is the embodiment of Crowley's faith and hope. And alongside that is Crowley's love for humanity (his speech about how clever humans are, inventing cars, motorways, and windscreen wipers)
That belief and love will always be stronger than the voices telling us we're doomed, that there's no way out, that we should just give up. We have to keep fighting, no matter who tells us that all the bridges have been burned and nothing can be fixed anymore. Even if we don't succeed perfectly, we tried. We didn't surrender. We kept going until the very end.
To me, this scene captures one of the central ideas of Good Omens perfectly: even if you're driving a burning car down a highway consumed by fire with only a few hours left until the end of the world, that doesn't mean you should give up and say, "To hell with it, let everything burn down. Maybe another world would be better anyway." (Yes, Good Omens 3, I'm looking at you.)
I don't know if I managed to express this thought properly, but I hope you understand what I mean, lol.
