From the Speedboard's wikipedia page "The Speedboard was the only NES accessory to be endorsed by a NASCAR driver, Kyle Petty." A bottom tier peripheral endorsed by a bottom tier driver, classic.
Well, obviously it has a use to someone somewhere. There are compatability dongles for everything. Mostly because people get bitchy if their expensive yet old xyz doesn't work with their expensive new xyz.
Blu-Ray with HDMI -> HDCP stripper -> HDMI to Component Adapter -> This Adapter (most pointless poc) -> VCR with good auto-tracking -> VHS in SP mode -> 70s TV Could this be done?