Most of what you perceive as "taste" is just using your sense of smell on food within the mouth, where it is very close to smell receptors.
To isolate taste informally, pinch your nose, stick your tongue out, and put food directly on the tongue when it's outside your mouth. You'll find that by itself your tongue can't distinguish many flavors, that's why everything tastes terrible when you have Covid or a bad cold.
Imagine a coffee shop ad with a beautiful example of latte art, but when you get your latte you are horrified to find just plain foam. Unless the ad specifically mentioned latte art, I doubt you'd have grounds for a lawsuit.
As for your example, I'm finding it hard to imagine buying a car before getting inside it. A few dealers offer a pre-order option, but you can always back out of the sale once you see the car.