"No one can make their own gasoline no matter how high the price spikes."
This is not true. Search 'wood gas' and WWII, and you will discover how many in Europe kept their mobility despite petroleum being unavailable.
"The point here is that food doubling or tripling in price is actually a good thing."
I grasp that would impel people to adopt rational decentralization in droves, which is necessary and good, but I caution you to be more cynical. We are not facing inflation alone, but famine. Backyard chickens are being seized and killed, with the justification of bird flu pandemic. I've even seen the saving of seed and gardening being attacked as 'unsafe'. Despite acknowledging that food shortages will shortly strike, the USG is taking more arable land out of production for conservation.
Rabbits do not produce eggs, but are silent. It may be necessary to have covert sources of food. Please follow IceAgeFarmer for well cited reports on the developing deliberate famine and consider rabbits, tilapia, and similar silent and potentially covert food sources you can personally secure. With the water from fish tanks you can hydroponically grow greens under LED strip lights, if need be.
Hope for the best and prepare for the worst, my friend.
Thanks!