Rock song no older than 4 years, lyrics "pink carnation(s) and a pickup truck"

It's not American pie. It also has the lyric in the hook/chorus 'already gone/going'.

I've only heard it recently so it may be new, but I'd say it's definitely no older than 4 years.

It's a rock song

Nevermind I missed one line of your post which would have answered my question.