I already have both the original POD and POD Gold PC CD roms. They both run fine on my Windows 10 PC. I saw a comment on the store page that someone else fixed this problem by purchasing the GOG version. NOPE!
Anyone know a fix for this? Im running it on an i7- 7th gen. NVIDIA Geforce GTX 1070.
it runs, but inside a tiny square. I got it to run at 800 600 but its still inside a tiny box at aprx. 10% of my screen space.

Don't know if this will apply to you, but I finally got POD working smoothly in windowed mode, music playback and the original car engine sounds. Using an app called DxWnd. (DirectX/DDraw wrapper)

I uploaded a ZIP with all these fixes combined in a single download link, it's here (game files not included, no pirated game assets here) Simply copy and replace files inside your game directory.
https://www.dropbox.com/s/hikcbqe4lmqkng3/POD_Gold__Music_Fix.zip?dl=0

Alternate link for direct download (better in some browsers)
https://www.dropbox.com/s/hikcbqe4lmqkng3/POD_Gold__Music_Fix.zip?dl=1