This reminds me of a GM minivan that my youngest brother-in-law drove, back in the '80's. He'd gotten it from his father, who was a career GM automotive engineer - and complained that, occasionally & randomly, it would not start. It seemed like the minivan's whole electrical system was dead...
Brother-in-law was known to be "not so good" with cars - so his automotive engineer father didn't take the complaints seriously.
Complaints and emotions escalated, until brother-in-law convinced his dad to swap vehicles for a month, so (he hoped) his dad could experience the problem for himself.
After the problem manifested in the parking lot of the GM Technical Center, and the whole crowd of GM engineers surrounding the vehicle couldn't figure out why the heck the electrical system seemed to be dead, my brother-in-law felt pretty vindicated.
Brother-in-law was known to be "not so good" with cars - so his automotive engineer father didn't take the complaints seriously.
Complaints and emotions escalated, until brother-in-law convinced his dad to swap vehicles for a month, so (he hoped) his dad could experience the problem for himself.
After the problem manifested in the parking lot of the GM Technical Center, and the whole crowd of GM engineers surrounding the vehicle couldn't figure out why the heck the electrical system seemed to be dead, my brother-in-law felt pretty vindicated.