Not sure if you're intentionally exaggerating in an attempt to prove your point, but I can't say I've ever met anyone who owned an F-350 to carry surfboards around, and "people who live out in the country would farm or whatever" is just utterly absurd.
The amount of the fuel tax is just a guess. I don't know exactly how much pain it would take to get people to change their habits. $10/gallon seems like it might work. What do you think? At what cost would you be willing to change?
Obviously it's just anecdotal, but I ran into a guy at the beach once who was unloading a surfboard out of the back of a brand new F-350 with the stickers still in the windows. We started talking, and I asked him, "So, are you a contractor?" He said, "No, I've just always wanted to drive a full size truck, so I finally bought myself one." I was like, "Sooooo, you must use it for hauling or pulling a trailer or something, right?" With a smile on his face the guy answered, "No, right now the heaviest thing I haul around is my surfboard and my bicycle. Maybe, some day, I'm thinking of getting a boat, and if I do, then I'll be able to use the truck to pull it..." I'm not making this up. :)
My wife and I have lived in the country 25 miles from the nearest town where we worked for the past 20 years. The entire time we've worked full time at jobs in town and farmed part time to make extra money. Recently, I went through our tax receipts back to 1995, and it was amazing how much money we've spent on fuel and vehicle expenses over the years. Most of the driving we've done has been commuting 50 miles a day to work and back, most of the time in 2 separate cars (both 4WD's, which we
needed for the farm).
In hindsight, I regret not being more assertive from the beginning. I've always said that we should quit our jobs and work full time on the farm. If the farm can't support us then it's just a luxury that we can't afford. Yeah, it's been nice to live in the country. Our nearest neighbor is ~1/4 mile away. It's super quiet at night. No traffic. Fresh air. But we've paid a price for that. Since we bought the land in 1997, I've wanted to quit our jobs and work full time at farming, but my wife has always been afraid. She felt more comfortable as a W-2 employee, because it was "safer" and was more "respectable."
Instead of living in the country on a farm, if we had just rented a small apartment in town, worked at our jobs, and dumped all of the money we've put into the farm and spent on vehicles into index funds, we could've easily quit working 5 years ago...
My point is that living in the country is a choice we made. If gas had been more expensive, say $10/gallon, probably we would've made different choices.