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The real issue is the safety issue. Shutting down a vehicle moving at 2500 feet/sec without subjecting the occupants to unhealthy G-forces is going to be rather difficult. But who knows, the human body can certainly withstand some pretty intense shock:
http://www.youtube.com/watch?v=s4tuvOer_GI
Is anyone else as annoyed at the moralizing tone of this article?
"With paper money, governments and central banks are in a position to punish holding money. Because it can be created without limit, discipline vanishes. Individuals, families, businesses, and government can ramp up spending without limit and avoid the consequences of their behavior."
Punishing the "sinners" for not keeping their currency and spending it in order to support the economy as a whole seems to be a primary goal of those that want commodity currency.
"You can try this experiment at home. Let’s say you have a problem teenager who lives like everyone else, throwing around cash and seeing no point whatsoever in saving money. Send that kid a Bitcoin and see what happens, even without hectoring instructions."
Yes, give them a Bitcoin and they'll be saved, praise our lord and savior Bitcoin! Unless that teenager wants a skateboard today, not two skateboards in 2 months. Maybe they want to buy a meal b/c they are hungry?
Finally don't reference the Gilded Age as a model of good monetary policy, two major depressions and a thin veneer of success for a wealthy minority shouldn't be the zenith of monetary policy.