I'll bite on the wear and tear, and time points.
We traded in our 2006 Escape after 3 years (and 3 WDW trips), with 36000km. We were getting our oil changes every 3 months, without coming close to the mileage required. It was under warranty, and came wit Ford roadside coverage. We were well under the blackbook mileage allowance, and the dealership advertised the highway mileage.
Time........the quote for our flight had us departing Detroit at 6:30am, meaning either staying overnight, or leaving home by midnight. With a stop in Atlanta, we were to arrive at 3pm in Orlando. Expecting to arrive at our condo around 4pm. Without the overnight, and additional $100+, it would be 16 hours door to door. Then we would be dealing with getting our rental car. Return was 2pm (airport by noon), with another stop, returning to Detroit at 9pm. Getting to our vehicle, crossing the border and getting home around 2am. 16 hours there, 12 back. Driving, we leave at 4am, and are in Orlando by noon the next day (32 hours), and leave WDW at 8am and arrive home by 4pm day 2 (32 hours). It means an additional 36 hours.......not 4 days, if we don't stay in Detroit, amd 29 if we do. The last time I checked, those days were also vacation, and well worth the $900+.