QUOTE
It's pointed out in this article that Mosby stopped short of calling what happened to Gray a "rough ride." But seeing as how that's a practice that involves shackling a detainee's feet (check), placing him facedown on the floor of a police van instead of strapping him in with a seat belt (check), and then taking sharp turns and braking suddenly so as to make the detainee slide around and get slammed into the sides of the van (nooooo, of course not), I have a feeling that's what happened. Just the fact that it's a thing that's acknowledged to exist makes me think that's exactly what happened.
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Diogenes of Sinope:
"It is not that I am mad, it is only that my head is different from yours."
"Other dogs bite only their enemies, whereas I bite also my friends in order to save them."
Arnold Judas Rimmer, BSC, SSC:
"Better dead than smeg."