Just curious what other people usually do. For a long trip (less than a plane ride, maybe 9-10 hours by car), I usually prefer to rent a car to save wear and tear on my wife's car (mine would be too small for that long of a trip

) and the extra miles and depreciation. She is in outside sales, so she drives a lot already (6500 miles in the past 3-1/2 months). She doesn't understand why I like to rent a car for these long trips (next trip will be about 1200 miles roundtrip, not including any driving once we get there).
So, what do you guys do?