We have to way to know it it's actually the fastest and farthest object: A 1957 nuclear test was conducted underground, but the scientists decided to cap the borehole with a sizable concrete and metal plug.

The nuclear explosion may or may not have caused said plug to reach space - the data from the cameras indicate it had at least 6 times the needed escape velocity, but it is difficult to estimate whether it would completely disintegrate or if enough of it would survive the atmosphere and whether it would "count"

https://nuclearweaponarchive.org/Usa/Tests/Plumbob.html (look for Pascal-B)

Calculations show that it was completely destroyed in the atmosphere. Which makes sense, cause meteorites of similar size don't make it to the ground.

It was also slower, 150,000 mph, than Parker Solar Probe, which reached 430,000 mph.

If there was a will NASA could just buy one from Guinness. That's how they make their money now.

Could be the start of space records :-)

I was struggling trying to think up any other plausible scenario, where one unit in a continiously operating piece of electronic /hard/soft ware was rebooted after such a long time and Voyager most likely has no competition in this regard or in a number of others sure speaks volumes for how well the nasa crew ,knew there stuff, and got it right durring that era,on budget,on time, and now doing inter generational space research making the actual designs and blue prints of the space craft, very much worth re examinining