There are some things that you learn in bourbon country that don't happen anywhere else. There are bourbons that you can only find there like Kentucky Spirit and Ancient Ancient Age. You also learn that for more than 75 years most of the state has relied on a local bottling company called Ale-8-1 for its primary mixer, not the international brands. It's a brand so much a part of the bluegrass tradition that the name isn't enunciated any more, it's called "A Late One" instead.
So I guess it shouldn't come as a surprise that a beverage that is loved this much arrived with sweaters. And not just sweaters, but sweaters that were knit with the sodas name and a winter design.
I gotta tell you, I've always loved ginger ale with whiskey. Until the first time a bartender handed me "a late one and rye". When the label described it as "Crisp, clean, real Ginger with a hint of Citrus" they are under selling the difference it makes. Now ginger ale just won't cut it.
It isn't widely known or distributed, but thanks to the miracle that is the internet you can buy it online direct from the company.
Do yourself a favor and keep some stocked in your fridge or wet bar.