Let's say your 2005 gas-guzzler gets 18 mpg. You want a new econo-box that gets 30 mpg - gotta save gas money. How much moola would you save in 50k miles - at $4/gallon?? Do the math - it is $4,444! That is a lot... until you compare that to the ride comfort of your current ride vs the little bi-fuel box. Then see just what your '05 will get for a trade-in vs the inflated price of the 'box'.
My '07 vacation on the Gulf Coast never happened - we are overdue. Let's assume we put 850 mi on the '05 Liberty, which has averaged 19.41 mpg over it's life. That's ~44 gallons. Assuming that it now costs $1.40 more than it did then, per gallon, that totals $61.60 more for fuel on vacation. That is less than a couple of dinners at 'Lamberts' in Foley, where you pay folks to throw rolls at you. I'll just go to Ci Ci's pizza buffet across the street - cheaper and better.
No, if we can get to go, the fuel cost increase will likely be inconsequential to the other costs. We may just have another 'stay-cation'... and a mad dash to Wally World for another Spydie Native in S30V - before they fade away. More importantly, I meter my local trips - to the shooting ranges - state parks for day hikes - more carefully. I also combine trips across town - 50-70 mi roundtrip equates to $10-$15 for gas, and that's where I see my belt-tightening. I'd camp in my own wooded backyard, if I could just get rid of the poison oak & ivy! Hmmm, herbicides are cheaper than gas...
Stainz