Actually, no, I saved after-tax income. A consumption tax on that money is double taxation. I already paid taxes on it.
Under the NRST, because all hidden taxes are eliminated the price of each car is $15,500. You'd pay a total $77,500 for the five cars. Plus pay $22,500 for the NRST..
Regardless of which tax scheme you use you get the five cars for $100,000 and are double taxed on that. Keep in mind that the NRST eliminates all federal income tax so the money you save will be pre-tax.