The fleet manager was maximizing $$$ return on used cars, at the best financial sweet spot- not trying to find the best hooptie to drive like you. Two different ideas and goals.This is a stupid rule. IF you followed it you'd be getting rid of a 6 year old car with 70k miles, since it would equal "13." Or a 3 year old car with 100k miles, representing all highway miles (which represents about 10k in actual use, factoring hwy miles are meaninglessly simple). Or a 10 year old car with only 30k miles. That's pretty much when you should be BUYING used cars. lol.
Buying something like this would be almost the BEST possible time/miles to buy a car, lol. Maximizing profit, minimizing loss, minimizing use.
The fleet manager was not a stupid person, btw. His fleet cars got top dollar at auction sales- "stupid rule" worked for him