Living in CT and commuting into NYC everyday, so there are scores of caches to find within a 1-2 hour drive. Opting NOT to keep up with the Jones and their SUV's I went with a VW Jetta TDI.... diesel. 50 miles per gallon and diesel is cheaper than gasoline, so fuel consumption is not a concern, 1 tank a week at 700+ miles a tank.
I do find it odd people buying vehicles specifically for the few days a year they might need the SUV and/or 4WD (or think they need it....... we still got around fine everyday in the decades before SUV's), while not considering the majority of the time they spend in the vehicle........ commuting to work.
We are VERY fortunate to have fuel prices so cheap and stable here in the US. Go to Europe, Canada or Asia averaging $5 a gallon and you'll realize how cheap it is here. How much were we paying 5 years ago? 10 or 15 years ago?
Like any other hobby, if you enjoy it enough you come up with the extra money from somewhere........... Is it morally wrong to have my 3 year old daughter get a paper route just so I can go caching????