This would something along the lines of the mafia thug offering you a crutch (singular) after he breaks both your legs.

As of May 13, the average cost – nationally – of a gallon of gasoline is $4.51 – up 25 cents in just the past five days. It is now very close to being twice as expensive as it was just five months ago, before Trump started this stupid, evil war which hasn't ended and which Trump seems determined to continue. Having done that, Trump now proposes to "lower" the cost by 18.4 cents per gallon. That is the sum and total of the federal tax on gasoline. So, instead of paying $4.51 per gallon, Americans would only be paying $4.33 per gallon (which is what they were paying last week, it's week worth pointing out).

Let's do some math.

Eighteen cents off the price of unleaded regular at $4.51 amounts to about a 4 percent "discount." Looked at from another angle, if the federal gas tax were not factored into the current price of a gallon of gas, the "savings" – assuming a typical 12 gallon fill-up, the capacity pf the average small car/crossover  – would amount to about $2.16 per tankul. Assuming one fill-up per week, that "savings" increase to $8.64 per month and to $103.68 annually.

On the other hand, the all-year average "savings" – $103.68 – just about pay for two fill-ups at the "lowered" cost of $4.33 per gallon.  You might have enough left over to pay for a (small) bag of chips.

Oh, thank you massa!