If Lutz says something is impossible, I tend to believe him. His biggest fault is in the other direction, taking on the impossible with disastrous results (Merkur, Volt, Fisker, etc.).
The process of how new cars are sold in the U.S. is terribly inefficient: huge dealer inventories, acres of prime commercial real estate turned into parking lots, hords of scummy and stupid car salesmen standing shoulder to shoulder, waiting for a potential customer to drive up. My local GM dealership advertises that they have $23M in inventory.
But, things got like they are for a reason, "evolution" if you will. As inefficient as it is, natural selection has determined that the current system is the most productive and profitable way to sell cars.
Back in the 1980's there were a lot of dealers trying to become "factory outlets" without new car inventory, where you made an appointment with a very busy salesman, drove a few demonstrators, and then ordered a car. Because of the efficiencies, they'd sell every car for less than $100 over the published dealer invoice price. The system didn't last long, because the dealers were going broke***8230;.. being so efficient.
The U.S. customer, especially the ones buying inexpensive cars, has a very limited attention span. Most of them prefer to "sign and drive." They want car buying to take less than an hour between driving onto the lot and driving off in a new car. That requires a lot of inventory and a lot of salesmen standing around waiting for customers to show up.
It's not just the Kia customer who wants his new car now. I friend of mine was at his kid's soccer game when one of the other fathers drove up in a 760Li. My friend started talking to the 760's owner, and asked him why he bought the V12 instead of just a V8 750Li which was about $15k less. "The V12 was in stock, the color I liked, and I wanted the car right then."
I grew up in southeastern Virginia. The area's population is probably about 1.5M people now. The area has the typical mega dealerships. But, there's as very small town there, Poquoson, with a population of about 13,000 people sitting on a point sticking out into the Chesapeake Bay. Poquoson is an Indian word meaning "big swamp." I lived in the metropolitan area for 35 years before I knew Poquoson had a Ford dealership. I stumbled upon it one day when I was out exploring after moving to the north side of the James River for my first engineering job.
https://www.google.com/maps/place/R...2!3m1!1s0x89ba813bbd8028dd:0x9eab337440a6d968
They park their new car inventory across the street in a vacant lot. They currently have ten new cars in stock:
http://rigginsmotorco.com/Hampton-and-Newport-News/For-Sale/New/
I'm not sure what their business plan is, but I suspect it's sort of the no-inventory, factory order system that was tried in the 1980's and is currently being used by Tesla. I moved to Florida twenty years ago. I was really surprised to see they are still there. I can't imagine how their parts and service departments work, though. I suspect they make a lot of runs to the nearest Ford mega-dealership's parts department.
BMW has done a lot to change the car buying system. They actively encourage customers to factory order a car, adding the incentive of the "King For A Day" Performance Center Delivery, and discounts for BMW Welt delivery of factory ordered cars. They've also added a $299, "BMW Experience" program at Spartanburg and Thermal. These centers probably have every model, color, and option in their fleets. So, if you want to test drive an M5 with a manual transmission and see what that ghastly orange paint looks like in person before placing an order, for $299, air fare, and a hotel charge, you can do so.