They’re called taco trucks. Or if you’re really lucky, clearly unregulated pop-up taquerias that operate from like 6-10pm outside hardware stores and cheap grocers. The one near me also has a rotating cart: sometimes a frutera, sometimes tamales, sometimes elotes.
Aw yeah, 14mpg, two distinct oil leaks, and cabins full of mold because the vintage weather strips failed forty years ago. (I drive a late 90s pickup and am acutely aware of the tradeoffs that come with older cars, even ones that are maintained relatively well.)