the real reason they're dropping it is because everyone simply remembers where all the built-in cameras are; you just have to drop your speed to an indicated 76mph just before the cameras. (the speed limit is 65, the cameras only fire at 11mph over or more, and speedometers always read higher than you are really going).
and when they park a mobile camera ford escape, they put out a sign, saying "photo speed enforcement ahead", so you just have to pay attention for the signs, which if you're speeding, you better be paying attention anyway!
the cameras all made a bunch of money at first, then income dropped off a cliff after everyone learned the system.
1. ideas don't make you rich, doing something with the idea does. it's all in the execution and the marketing.
2. if you can't even spell "vette", I don't hold out much hope for your execution skills.
where I live, it's legal to carry a gun, as long as it's not concealed (you can get a permit to conceal too).
I would think the best thing to do would simply be to wear a gun while tracking down the iphone. I'd imagine that simply having it visible are going to tilt the odds way in favor of the thug either running away, or just handing over the iphone.
basically, once you're armed, you have the capability to handle escalation if it occurs, but until the thug escalates, you are simply tracking him down and politely asking for you iphone back.
note, I didn't say pull the gun out. the only time you draw a gun is if you intend to kill with it; the only time you should be trying to kill someone is if a reasonable person would consider there to be no other recourse; i.e., if he's threatening you with words, don't kill him. if he's swinging a baseball bat at you, rushing you with a knife, or brandishing a gun, then kill him.
Ya'll hear about the geometer who went to the beach to catch some rays and became a tangent ?