Too much of the right information
Most stores either starve a shopper or bury them. They answer the last question and wait, or they dump everything they know about the car. Both send the guest home to get informed.
The better version looks like too much. Numbers. Comparisons. What is actually here today. What happens to the payment if the term moves. What the service plan covers. How this unit stacks up against the similar one. That is an overload on purpose. It is not a brochure dump. It is the right stack for this person, while they are still deciding.
You get the stack right by anticipating. They already told you what they need in the first five minutes: the kids, the driveway, the last car, the number they flinched at. If you wait for them to ask about payment, you lose the walk to go get it. If you wait for the third row, the tow hitch, the commute, lease versus buy, you spend the middle of the visit collecting facts you should have been using.
A QR code is not a conversation. A printout of every option is not a decision. They do not need the catalog. They need the things that settle the actual worry, in enough depth that they do not have to go verify it later. Can I afford this one. Does it do the job I drove here about. What do I give up if I take this instead of that. What happens if I wait.
People buy a car when they feel they have seen around the corner, not when they have been spared the details. Spare them the wrong details. Give them more of the right ones than they thought to ask for. That is how they stop needing to leave in order to think.