Mcdonalds Employees re routing customers to the parking lot, then take there own time with your order

Ive noticed a new trend at Mcdonalds Lansdowne corner in Cape Town. I go there atleast twice a week. When you purchase something there now via the drive-through, you are directed to go and park in the parking lot, whilst they prepare you food or whatever you purchase. I even bought chips there and they directed me to the parking lot. When i asked what this new procedure is, they said they dont want me to park at the window, as there is a timer which notifies Mcdonalds how long customers are waiting for there orders, so instead, they have this work around, whereby customers must go wait in the parking lot.