Chosen Solution

I am wanting to install the ipod classic OS to a usb drive.
I would put the drive in my truck for music. I am not sure this is even possible to do. Any help is appreciated. My truck is a Chevy Silverado.

basically use a usb drive as an ipod and have steering wheel and dash controls I don’t want to leave my ipod in the truck all the time due to temperatures in Winter, freezing F and Summer, 100F

No. Forget about doing that. It’ll never work. Just use an iPod on your truck. The iPod operating system is only designed to run on iPods.