My wife’s from North Carolina, not Mississippi, but I’ve heard her refer to a manual transmission as a straight drive, and some of her older relatives still call an accelerator pedal a foot feed.
It’s funny to hear her accent come out as she talks to her mother on the phone. It’ll last for a day or two.
I was born in Brooklyn and learned to speak English in school. My usual accent is Standard American English from TV.
But if I watch a movie set in New York, I start to talk like the guys in Goodfellas.