So a dollar that's worth 40% less has nothing to do with the producers wanting more of them for the same amount of a product. I hope you never attempt to run a business, at least not with anybodies money other than your own.
Not in this case because oil is still priced in dollars. The Saudi's and OPEC can try to get the dollar price up by cutting back on supply. Which it looks like they are doing, but as the price goes up more oil will come onto the market.
But the rise in price of gas isn't in the shortage of crude, but a shortage of refinery capacity and the regulations hampering the refinery capacity even more(i.e different grades of gasoline).