as they were sold to prevent travel sickness.

Wow. Science!!

I thought it would be easy to Google a link to these, but that didn't turn out to be the case. I found lots of references to ground straps on forklifts in high-risk/explosive environments, and a few references to "metal-impregnated rubber ground straps you can get at truck stops", but no JC Whitney-esque parts listing for humble consumers.

So, they are real, but where to get them?

Jim