While I agree with you in economic principle, eating is somewhat more important to the survival than driving. If I don't eat for a week I die. If I don't drive for a week, I'm bored. Small disparity between the two.
Frankly the "need" to drive is largely a construct of our (US/North American) society. People survived and lived for literally thousands of years before oil. They got around when they needed to, and they were in better physical shape. How many of us (military personnel excluded) can walk two miles without getting winded? I know I can't, and I used to run a 6 minute mile. Now in my case, there are other medical conditions involved, but what's your excuse?
While I don't purport to call what OPEC does "ethical", your suggestion goes beyond unethical and well into the realm of immoral.