Tom, I had to look the term
Tom, I had to look the term up online to see if you were just joking or not. I have never heard Mokie/Mokey used ever in my life. Not in TV or movies, or real life. And being so amazingly obscure I wouldn't worry about Ford naming an electric crossover Mach-E. The original 1969 Mach 1 was named after supersonic speed, or objects traveling faster than the 767MPH speed of sound. This year Ford brought back the Mach 1 name for the sportier Mustang GT that replaced the previous Bullitt. The Mach-E makes sense, being the sporty Electric "Mustang".
Many car companies have to change the names of their cars in foreign countries because the names mean something else in a different language. Like the Nova, Kona, Jazz, Uno, Fit and others.