Actually this scam is very old scam back in USA/Canada.
but it is very convincing.
Worse, legally, nothing can be done to them.
My roommate was almost cheated by them, he was walking at the mall
car park and stopped, he was shown gleaming speakers of good
quality.
Luckily he remembered that my dad was an audiophile, so naturally i
know a thing or two about brands. He called me on the spot to ask.
I told him i never heard of the brand, much less of it being easily
"overloaded" onto the van.
He went home and did research... and fonud out it was a scam.