Even if you could technically meet the legal requirements (which I'm pretty sure you couldn't), it'd be impossible to mass manufacture and completely undesirable to consumers. Imagine having to change out the paper rolls/ink in your analog EDR every couple hours, while making sure the battery doesn't explode every time you charge or discharge it. The dashboard alone would be a sight to behold.

Honestly, it'd be fun to see how far you could get. Backup fiberscopes vs cameras?