Broad statements like this are NOT necessarily true just because they sound logical!
Our 1990 SUV which needs to be an SUV/4X due to it's use for work in the winter. (state law enforcement in a rural area from a urban location.)was the family 'work' vehicle . The SUV gets about max 20 mpg and was replaced with a Dodge Neon which gets 32 mph. The gas milage alone makes the payment and reduces the repair and maintainace(on the 1990 SUV.)by a minimum $2500/$3000.@ year.
True, we may have to use the SUV for moderate/major Snow days in winter but even tho they may be the exception rather then the rule, it is required to work those days even more then others. 10/12 days use of the SUV aside, the Neon is efficient, comfortable and under warrenty. We actually come out ahead in $'s and cents's with the Neon gas savings paying it's own payment PLUS.
No doubt some would find our solution unaccepable due to the macho factor or unworkable due to present personal financial reasons but personnaly it was the best and brightest solution to Nevadas $3.00 a gal. summer gas and appears to have no down side for us.