McDonald's VP says, "The order-taking process on average takes 17 seconds in our drive
thrus for simple orders of two to three items. For larger orders with eight to 10 items,
it can take 50–100 seconds".
If ordering time is important (and it is) why are some stores wasting time letting the
order taker great the customer with their name?
The 2017 QSR Drive-Thru Study - QSR magazine
McDonald's VP is quoted HERE