Carhops originated in the late 1930s when drive-in eateries were devised to draw in a more mobile society. It started as pull up service to drug stores and eating establishments and was found to be a very effective way to draw customers. The name "carhop" came from the practice of the waitress or waiter jumping up on the running board of a patron rolling into the parking lot. This car hopping showed that this particular car was that servers car, as tips were the main income of these waiters and waitresses. Women replaced male carhops as restaurants discovered that a pretty face sold more food.
Source: TheFreeDictionary
Findlay, OHIO