Land Rover used to do the same sort of thing with Range Rovers (and, I assume, other cars too).
We went to one down in mid Wales at Laura Ashley's old house - a very nice place it was too. Off-road driving to show you just what the cars were capable of (even with a numpty like me behind the wheel, truly astonishing), followed by lunch, then by them handing you the keys to a freshly washed car and waving you off, asking you to be back in an hour or so.
Absolutely no sales people in evidence - the call came a couple of weeks later, asking if you'd enjoyed the day and what you thought, etc.
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