I've bought 4 new cars and one new truck in my life. The truck and 3 of the cars were built by Ford and none used any oil whatsoever. The other car was a '66 XKE Jaguar. The Jag would always be a quart low when I hit 3,000 miles throughout its life. It had about 80,000 miles on it when I traded it in. The Jag had a large oil capacity, I think 6 quarts or maybe more so getting a quart low wasn't a big deal.New engines use oil, it's a fact.
So I must respectfully disagree with your statement. It is not a fact that new cars use oil, at least not in my experience. I suspect a few other folks here might also have similar experiences. Also, FWIW, thus far my Fiesta hasn't used a drop of oil. I stand by my previous statement "if I had a car that used a quart every 1500 miles I would get rid of it". As for driving 4500 miles in a week, just take a vacation from Florida to California and back. People do that all the time.