The thread about using hedging to counteract PO got me thinking, so I have been working on a scenario, the most extreme possible:
Let's say you want to buy a car, and have the following two choices: The first, a 1998 Ford Explorer, with 150,000 miles on it. In my area, you can get one of these for about $5000, and it will get about 12 mpg in the city. This is one of the most legendary POS vehicles of all time. It was the subject of the infamous rollover recall, and subsequent lawsuits. These vehicles are widely acclaimed to be death traps.
The second, a 2007 Prius. $26,000 drive off price, and 34 mpg in the city. Everyone loves them.
If you drive 10,000 miles per year, that's 833 gallons per year for the Explorer, and 294 for the Prius, per year.
So theorectically over the next 5 years, given a constant fuel price of $3.25, you would pay about $13,400 for the fuel for the Explorer, and only about $4800 for the prius, so the net of all of that still favors the explorer by a lot. The initial $5K purchase price plus the fuel cost gives you $18,500 in cost, the total for the Prius would be $31K.
But you have to figure that after 5 years, the Explorer will be marginally functioning, and the Prius will still be going strong. So figure a $1000 salvage value for the truck, with 200,000 miles on it, and a $15,000 salvage value for the Prius with 50K miles on it,
In this case, the Prius does a little better. Net cost is about $17,500 for the truck, versus $16,100 for the Prius.
But, the next question is, if you bought the Explorer, what did you do with the remaining $21,300 that you had left over since you did not buy the Prius?
We had some fun in the other thread with this mutual fund:
FSENX
In the past five months, the price of fuel has gone up by 39%, and the return (including dividends) on FSENX has been 16%.
If you invest the $21,300 in this fund, and the price of the fund goes up at the same proportion as the increase in the fuel price as it did in the last five months, what happens to your net worth?
The answer is: If the fuel price goes up "zero" and the mutual fund goes up "zero" you are a little better off buying the Prius after five years. You own a $1000 piece of junk, you paid out $13,500 for gas, but you still have your $21,300 investment for a net of $8758
If you bought the Prius, you have a $15,000 prius, you paid out $4800 in gas, so the net of that is about $10,200.
But, we think, being peak oilers, that the price of gas will go up over the next five years. If the gas price goes up, the investment goes up by some amount.
Let's be optimistic and say that the average fuel price will only increase 10% per year over the next five years. In this case, the investment will increase 17% total over the next five years, offsetting both the increased fuel cost and the salvage value difference, and you will be ahead if you bought the explorer: You will have the $1000 piece of junk, you will have paid out $16,535 in gas, but you will still have the $21,300 left over from the original transaction, plus you will have made about $4000 on your investment for a net of $9750 give or take. In the Prius case, you have the $15,000 Prius, you paid out only $5800 in gas, but you do not have the investment income. Your net is only $9200, give or take
Stupidly, the higher the price of gas goes, the more sense it makes to buy the Explorer, as long as you invest the leftover money in some way to take advantage of an increasing oil price. The breakeven amount of fuel increase is about 7.4%. If you think fuel will go up this much or more, buy the explorer, but be sure to make the mutual fund investment. This rate of increase will lead to a $4.32 unleaded price in 5 years, but you fatten up on the investment so much that even if gas doubles every year, giving us $16 per gallon in five years, you are still better off than if you had bought the Prius.
By the way, none of this obviously includes such stuff as repairs, to either the Prius or the Explorer (the Explorer will need a new transmission and the Prius will have to have a new set of batteries). Also no insurance, preferential tax treatment, or other stuff. Also, no taxes on your investment. Hopefully the IRS will be dysfunctional in a world of $16 per gallon gas, so they will not come after their money.
Also, we are making a big assumption about the rate of return of the fund.
All I am saying is, that you have to look at the initial cost of the vehicle, the salvage value, the operating costs, and most importantly, what you do with the money you do not spend on the Prius in order to make a decision that maximizes your net worth.
Some people naturally think like this. Other people just say: Get a good bike at a garage sale and do not worry about it.