I also suspect he hadn't stopped. Non UK readers might not be aware that it is an offence to use a mobile when driving in the UK. Not going to announce that in public. Probably nothing though.
There's places here that have ordinances against it. Not sure if there's any state-wide laws (I think so, but Ohio doesn't). But here, no department would care enough to try to prosecute after-the-fact.

Anyway, my non-photoanalysis opinion is that the "object" is obviously an artifact and not a flying object.

And my inner Occam is still screaming "Mechanical failure, and damage to second arm due to collision with falling debris."

But, for all I know, the recovered arm that's being studied has the words "Khan wuz here!" carved into it. *shrug*

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I'm like one of those idiot savants...well, except for the savant part.
"In order to increase awareness of the homeless, security have been given binoculars."