Mmmmm I now better understand you want to equate the carefree happiness of an eight year old out for a drive with Grandpa with the carefree happiness you feel as a rebel...

So yeah, you could change those last two lines, maybe something like this??

Passed this way in my grandpa’s truck
Back when I was eight
I'm riding high again, in the clouds on the wind
And not feeling any weight

Which leads nicely into those two lines I mentioned..



If writing ever becomes work I think I'm going to have to stop