Some steps to follow when fuel prices goes up:
1) Improve your driving: a study here in Buenos Aires showed that driving at 90kph instead of 110kph saves very little time, minimizes accident risk and saves more than 12% of fuel. (figures in this article in spanish)
http://www.clarin.com/diario/2008/07/03 ... 707153.htm
2) What do you want, to save fuel or to save money? New cars save fuel but are more expensive. Little cars are cheap and save fuel but may not have the comfort you pretend.
How to choose?
* If you will drive mostly in freeways I can assure you that a 1.6L car spent less fuel than a 1L car, cause it revs much less to get the same speed and speed is something hard to negotiate in freeways.
* Why do you North American friends say that new compact cars aren´t gonna save you money? How expensive are they? Doesn´t the 3 big produce any 1.5 Liter car in the US? I would like to see some "factual maths" so I can understand your "change to small OR NOT" arguments...
* Want to buy a small low fuel drinking old car because is cheaper? But the possibility of big repairing bills frighten you? DO IT YOURSELF! I know you wont be able to change the cranckshaft that easily at first but there are many things you can learn to avoid visiting the mechanic at a monthly basis. I own a 1998 car since October 2007 and have never ever visited a mechanic. I changed braking pads, oil and filters myself only in a few minutes (make sure you take all safety precautions for working under a lifted car). Of course I bought the car in a very good condition, used car sellers could hardly cheat on me. So, before buying a used car ask your "expert in mechanics" friend to take a look at it? You all F1 fans should at least know 1 person in the world who knows at first glance if a running engine needs rings changing or valves need to be regulated. You can check for yourself if the chassis suffered impacts (analyze paintjob, corrotion tracks) and at last but not least: suspension and brakes: they are cheap spare parts and easy to repair so mechanics should not charge yo much for them. Make sure they dont "invent" problems that doesnt exist when you take your car to them. Get used to pay attention to the noises your car does when driving (at neutral) and you will easily detect if the problem is a homocinetic joint, a wheel bearing or just your braking pad worn out and there is a metal-metal contact against the disk.
3) Reduce car usage: for short distances use a bike unless there are no proper road conditions. As Carlos pointed out drivers may be rude with bikers but in the other way in many places there are "bike exclusive pathways". For even shorter distances just walk. If you have a good public transport service (not an option in Argentina) then use it! If you know your neightbour works near you and has the same time sketchual then share your ride!
For instance, I pick up two guys that work with me in the same plant every morning. Sometimes we go in my car, sometimes in one of their car. The last guy that has no car contributes with some bucks for fuel, not as much as he would spend coming by bus.
I was really astonished when I saw North American Freeways on TV: there are exclusive lanes for more than 1 passenger cars... totally EMPTY!!! when a traffic jam is actually going on on the other 4 or 5 lane. Why don´t you share people?
I hope you can at least use some of these advices!