You're way off. Very few cars "mechanically fail" at 100k miles. In fact, the average mileage on the odometer of passenger vehicles on the road in the United States is pushing 150K miles.Quick internet search, but the number is totally believable. Cars burn, crash, get recycled, and sometimes at 5,000 miles. Many cars fail mechanically at 100,000 miles. It takes very little these days to total a car, and similarly, does not take much to push a car past the point of economic repair. Like most of us here, I find it very interesting when people go well past the expected life of their cars, usually through careful maintenance and proper operation, but this has come up in the past, and you can rest assured that most cars, even RAV4s will never see 200k.
https://www.aftermarketmatters.com/national-news/odometers-numbers-spiral-for-all-vehicles-types/