Why they aren't announcing a third party right now, fucking mystifies me.
Because of basic game theory. The US is a two-party state for fundamental structural reasons.
That said, the identities of the two parties have changed every once in a while. Seems like they're overdue for another such shakeup at this point, but who knows when it'll come. Could be that the two existing parties have figured out how to stall that.
"Never" is a long time. Technology is always getting cheaper, I see no reason why that sensing equipment won't end up on a production vehicle at some point.