Drive through or restaurant?

The planning documents describe the drive through as “for the sale of food and drink principally to visiting members of the public where consumption of that food and drink is mostly undertaken on the premises.”

Surely the idea of a drive through is for people to buy food and drink for consumption off the premises?

If consumption of food and drink will mostly be undertaken on the premises then why is it described as a drive through, and why does it need traffic to flow around and through it?

The planning committee must see through this shameless attempt to deceive for profit at the expense of our environment and quality of life!