I just saw the "Tipping for takeout food in the USA" question. Curbside takeout was not addressed in any of the answers to that question, so that is why I am asking this question.
Many American restaurants now offer "curbside takeout". That is where you call the restaurant to place your takeout order. Then when you arrive at the restaurant, you are supposed to park in one of the designated "curbside takeout" parking spots. You do not get out of your car - instead an employee will come out and ask for your name and then go back into the restaurant to get your order. Then they'll come back out with your food and take your payment. If you pay with a credit card, they have to come out a third time to get your signature. That's a lot of trips in and out of the restaurant.
The answers to the other question say that you're not supposed to tip for takeout, but that you are supposed to tip for delivery/service. One could argue that with curbside takeout, they are providing a service by delivering the food to your car.
So are you supposed to tip for curbside takeout?