H-E-B isn't the only food retailer tinkering to develop a profitable drive-thru operation. Dallas-based 7-Eleven has been experimenting with a drive-thru window at the convenience-store chain's test lab unit, where customers can receive coffee, sandwiches and related products.
a pick-up time, and then drive to a video-monitored section of the restaurant's parking lot, where servers respond with the order.