coun these two payment plans? (4.7) buildin 4-33. Automobiles of the future will most likely improv be manufactured largely with carbon fibers collect made from recycled plastics, wood pulp, and cellulose. light-e Replacing half the ferrous metals in current automobiles per ye could reduce a vehicle's weight by 60% and fuel these $2 m consumption by 30%. One impediment to using carbon the d fibers in cars is cost. If the justification for the extra sticker price of carbon-fiber cars is solely based on fuel savings, how much extra sticker price can be justified 4-38 over a six-year life span if the carbon-fiber car would abo average 39 miles per gallon of gasoline compared to a real conventional car averaging 30 miles per gallon? Assume 6% that gasoline costs $4.00 per gallon, the interest rate is 20% per year, and 117,000 miles are driven uniformly over six years. (4.7) a. inment