It is hard for me personally do take such a poem seriously, but it (and others by the same author) appear in the poem a day for American high schools list:
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www.loc.gov]
Perhaps a lack of spelling and grammar mistakes, with lines that do not reach the right margin are all that is required to make the 180 list? Mystifying, but I will therefore have to bite the bullet and infer it is good poetry, at least on some level.
The speaker is reflecting back on a night when he, his brother and his brother's friend are riding in a car, listening to music on the radio. Is the speaker the eldest of the three (by four years)? Seems like it, but the rest of the dialog makes me think he is the younget. No matter. Key lines would appear to be,
>I am upset by the fact that that night is so absolutely gone.
and,
>I may not have thought of that ride once
>in eight years—and this obscurity troubles me.
>Death is going to defeat us all so easily.
>it seemed as if we had the key to the highway.
If the highway is the road of life, and they had the key, that might be interpreted as 'living in the moment'. That is, carpe the diem for tomorrow we die. For me, if that is what the author is trying to impart, the lesson is too old to be carping on it again. Every poet for the last umpty-dump centuries has written a poem on the same subject, I mean.
I have missed the point, you say? Wouldn't be the first time, so make your own interpretation if mine is off base.