I could not care any less about who/when claims to be first - all I know is that I saw Fred Flintstone get an order of Brontosaurus Ribs at a drive-in with my own eyes!
But the mention of Kirby's Pig Stand does remind me of a topic that I was thinking of bringing up - that of unique drive-in restaurant names and/or themes. To get the ball rolling, I'm submitting a pic of this place in Baker City, Oregon. Apparently it was quite the hangout back in the day!
How about it - anyone out there got some examples of this sort to share?
My wife and her sister once had a drive-in restaurant (with a dining room in the back) that was built in the '50s (at least - maybe even earlier). It had three speakers on poles along the drive-up lane. They were ancient technology by the time we came to the place in the '70s - so crackly that it was often easier to walk out to the cars in line and take the orders. I don't now when Jack In The Box started, but there sure as heck weren't any of them around our area in the 1950's, so I kinda doubt that they were "the first". Lots of the old drive-ins had them well before the modern chain places even existed.
That's an interesting point and news to me. For many decades, I've thought I was going to "the drive-in" to get food and/or drinks while in the car (without carhops). I'm gonna have to adjust my thinking - but gonna be honest: it'll be difficult. Old habit die hard!