That's already developing in Fast Food, soon to become Automated Food.
It's practically a prospectus for Momentum Machines, and their Automated Burger Machine. . .
Actually, if I wanted to defeat one of these, I'd build an EMP Pulse generator into something innocuous, and fry it from a distance.
Example (although likely too low-powered to disable a MallBot . . ):
Not necessarily "Yay Canada". I live far enough away from a major metropolis that we still leave doors unlocked, and have never had a package disappear. I think it's really more like "Yay Low Population Density". . . .
Land of the Formerly Free, and getting more so every day.
The REAL WTF? is how this happened, literally under our noses. A little over 12 years, and we've become a de-facto police state.
Gate-rape by the TSA
Ubiquitous monitoring by the NSA
Monitoring our financial transactions by FINCENT and the IRS.
And the sad thing ? Most people will allow the frog to keep being boiled to death. . . or, worse, are afraid to blow the whistle. I guess, in the final analysis. . . that the terrorists WON. . . .
. . .
And even sadder, the usual life of a Republic is around 200 years. Which explains much of Modern America, which seems to be in transition to both a Police State AND an Empire. After all, we now seem to have both a de-facto permanent underclass and a self-sustaining de-facto aristocracy. . .
Indeed. Well, Milk Cows, anyway.
As for beef cattle. . . . I suspect they'll mostly be going away in 20 years or so. . . once they find a decent way to mass-produce vat-grown protein that replicates taste and mouth-feel of "real" meat, beef cattle will decline to a niche market. . .
Really. Pebble-beds. LFTRs, and other modern nuclear tech looks to be a viable solution. Save the petrochemicals for plastics and pharmaceutical feedstocks. . .
Now, burning natural gas, otoh, looks like a viable alternative to petroleum for vehicle use. . .
Hey, I'm a contractor and I don't eat kittens. . .
Roadkill ? ENTIRELY different question. . . (evil grin)