While the writing is not technically bad, I have some doubts about whether the style is a perfect fit for this particular story. The prose is flowery and pompous and the images heightened in a way that borders on silly, coming off as sort of dissonant with the protagonist's detached, desperate state of mind. It's mentioned that he's been walking for "hours, maybe days", but what we read just doesn't feel like the internal monolog of someone in such a materially harsh situation. It imposes a distance that makes the story difficult to get into.
The dialog feels thankfully a lot smoother, and the segments leaning on it feel more dramatically engaging; the character voices are, in comparison, appropriately restrained and naturalistic. As a smaller nitpick, it feels like the writing doesn't trust itself, resorting to spelling things out too often. See: "Sarcasm was my shield, wielded to keep his concern at bay, to hide the raw ache his question pried open... The number a shield. Eighteen felt too fragile and immature." I think it would have been fine to not explain these things this directly.
Though the art is good, the presentation is rough around the edges from the unassuming title screen to the floating sprite and the CG being in a weird aspect ratio. Points for overcoming the classic sprite-in-a-car problem by (largely) using the environments, not the truck, as the background, though.