With the one-way latency being upwards of 20 minutes, I wonder what the software looks like... They've basically got to queue up an hour worth of actions before they'd even see the first response from the rover.

I'm guessing that's in the Tom Scott video, so I'll have to watch that later.

Edit: It looks like they're only using it for manual driving of the test rover on Earth. The autonomous driving is a whole separate system.