My history with any performance car that I have owned or do own is to change the oil and filter when it "goes into winter hibernation' regardless of the miles I may have on the oil itself. For my current car, 5 quarts of Ford's Motorcraft Semi Synthetic oil and a Motorcraft FL300 filter is less then $20. This late in the year oil change will remove condensation, by products of combustion and any gasoline that may have gotten into the lube oil system. I also do it with the engine as hot as I can stand. Even if I used the full synthetic oil, it would still be only about $30. Using full synthetic oil while a great product still doesn't lessen the impurities in the crankcase.An oil change is cheap insurance.

Now - your question - and since you raised the subject of newer cars and the 3/3000. Most new cars are on a 5-6000 mile interval, but that is under normal conditions, i.e. mixed stop and go plus some open highway driving. If you are pulling a trailer, operating in dusty conditions, the interval is usually halved. Yes there are those that do strictly highway travel - and they can go for many more miles, but the mfrs play a CYA with owners. My truck an F350 w/7quarts and my wife's little Escape SUV at 5.5 quarts are on 5000 mile change intervals even though the owner's manual says 6000 - why - again, cheap insurance when you figure the replacement value of the F350 is over $50K and the Escape, over $28K. If I haul my 12,000#(loaded) fifth wheel camper on a long trip, I'll change the truck oil at 3000 miles or less. This is what I'm comfortable with - and have in many years never had an oil related failure nor even sludging.