My experience wasn't at a drive-thru but it was still memorable...
I had lot's of people make favorable comments about my '04 Daytona Blue Touring Coupe but this one experience stands out from the rest.
I had just had my dealer install Nismo wheels and new tires on the car and I had stopped at a Shell station a couple of blocks from the dealer to fill up.
While I was there; a car pulls up to the pumps on the other side and this very cute teenage girl (I'm guessing 16-17) gets out, comes over, tells me she thinks my car is the most beautiful car she's ever seen then gives me a hug (I assume she feld it safe to hug me as I was 50 at the time and probably didn't look very "dangerous"
)...then she just gets back in her car and drives away.
I had a smile on my face the whole day.