Yeah I can remember people using the term "Cuda" before it was ever a nameplate on a E-body. I also remember hearing the derogatory statement "you CUDA got a better car "!
Sad thing is the first generation Barracuda was a lot better car than the Phord Mustwang, but Plymouth didn't have the marketing campaign Ford had. The Barracuda handled better, was faster with a v8 and beat the Mustwang to market by two weeks. Just goes to show people were stupid in the 60s just like they are now!