hand_rifle_guy, i feel your pain, totally. i can't imagine how i would react in that situation.
i am moving back to Palo Alto from Seattle in a few weeks, and don't look forward to this sort of potential confrontation. that said, i drive a Lexus (family car), so i probably won't raise eyebrows in PA. stealth mode.
re-reading your story, and in particular noting the things you quoted yourself saying to the cop, i can't really imagine him acting too terribly differently, especially with your violent outbursts. if i were in his position i'm not sure how I would react. granted, i wouldn't be in his position - ever. no disrespect to leos and former leos out in TFL land with your heads screwed on.
i am not suggesting that your hyperactivity/add is BAD, or that you _should_ change it - but you should definitely be aware of how you look to the outside world, even if exponents of that outside world are twisted individuals.
someone suggested acquiring a medical statement documenting your condition - this seems like a great idea. i would ask the doctor to note manifestations specific to the diagnostics used by LEOss (heart rate, ...). this would no doubt help, especially if presented calmly....
... and there is the rub. in particular, IF the anger part of your hyperactivity COULD be controllect, even just in these special situations, even just a tiny bit, my guess is that this would probably save you a lot of hassle.
in other words, if you kept your cool (i know, impossible given the behavior of this lamer... but... actually, not impossible... just difficult...) i doubt future situations would devolve as your past one did.
it wouldn't hurt to have some lawyer friends. if you don't know any, you can hire a 'friend'. alas.... if you can't afford one, then you are screwed - big time. and justice for all... with the dosh.
i am fortunate (!) to have a lawyer friend, who helped me get out of a pretty severe speeding ticket recently. i chose not to go to mitigation, but instead to take it to the judge.
in court, i watched 12 people go before me - none of them knew how to address the judge, had EVIDENCE of what had transpired or what was bogus in the claim. one exception: a pretty girl got off when she started crying... the judge quieted let her off, and the secretary even had to ask him again to confirm she was free... but all of the others faired poorly.
then it was my turn. i was prepared.
i had BULLETS ready for the judge... not CCW-style, but legal preparation style. he looked a little shocked when i asked to file a preliminary motion... end story: my case dismissed. BUT, had this failed, I had FOUR MORE PRELIMINARY MOTIONS ready if that first one had failed. this is what a good lawyer gets you - backup research and loophole finding.
all of this because of my lawer friend. i owe her dinner again.
regardless of the situation... if you do go to court, if you are pulled over.... knowing the rules of engagement, the lexicon, and your rights will get yor far. playing by their rules actually restricts your opponents degree of freedom.
out.
my $0.01.
-steve