Fred and I agree that $6/gal gas would cut down the hoarding for many people, just by virtue of the fact that many people live from paycheck to paycheck, and it would cut into their cigarettes, beer, and general walkin' 'round money.
And I would add that, while people in urban areas are often easily driven into a frenzy, they are also living in much denser distributions.
Students live in probably the densest housing of all, with rules about co-habitation of many many unrelated people often relaxed or ignored for housing that would normally be serving a unit with two cars. In student residential areas, often that same unit will be serviing four to six cars. What we noticed from first hand reports is that the areas around Middle Tennessee State University in Murfreesboro and the areas around Vanderbilt University in Nashville were out of gas within a short announcement of the anticipated 15 cent price hike. Maybe students are more gas budget sensitive too, plus they're often not working an 8 am to 5 pm schedule so they can just run over to the gas station between classes to top off.
I would venture a guess that in the urban areas there are just a whole lot more people driving around on any given day, like a swarm of locusts, and with modern social media, the stage was set for hoarding as soon as it was announced that hoarding should not be done.
Last night it looked like a lot of the stations that had been out were restocked. There were still lines here and there, but there were no places where we saw lines extending out of the stations. We only saw a few stations that were out of gas. Most stations seemed to have gas available, and for more or less a "fair" price.
Maybe as it becomes clear that gas stations will be resupplied, the feeding frenzy will completely dissipate.
One of the other things that causes shortages in the urban areas is that many cities, like Atlanta for example, have laws in place that require boutique fuel blends to help mitigate pollution. The supply of these specially crafted boutique blends always dries up first. That's one of the reasons for declaring an emergency. It allows them to ignore these special blending regulations, but they still have to find fuel from the same zero sum game that exists on any given day in this industry. The pie can grow, but there is always a bit of lag.
Last comment.... if you study alternative fuels, pricing, supply, costs from field or well to wheels, etc., one of the basic premises is that people will pay what they have to for as long as they can. They're not going to park the car or bike until there is no other choice. They've paid for it, or they're paying for it. The cost to run it is just an unavoidable expense, and it is generally a fraction over the life of the vehicle compared to the cost of the vehicle itself.
So eventually people figure out how to suck up the cost of fuel in their budget, but first hand observation shows that when the price rises to $4+/gal in most areas of the US, a lot of what once might have been thought of as necessary driving becomes unnecessary driving.