Tent (and stuff) carried in a car. On several occasions, tent and stuff shipped out to a destination and then carried in a RENTAL car. Our motivation in camping is simply to enjoy ourselves and save a buck; we don't feel any inclinations to purism of any kind. We rather enjoy shopping in unfamiliar supermarkets, and buy supermarket food, including convenience food--maybe we will cook a bannock by the campfire but we are just as likely to put some slices of supermarket ham between some slices of supermarket white bread, and sometimes eat out at local ethnic-restaurant-in-strip-mall places.
You left out a possibility, sometimes called "camping lite," which involves renting a fixed shelter--often a yurt in the U.S.--at the campground. We've never done that in the U.S. but we had a great vacation in the Netherlands in which we rented a "trekker's hut" in a strange complex that seemed to include RV hookups, fairly fancy vacation cabins, permanent mobile parks, athletic facilities, and a (good) restaurant. It was great! The "hut" was almost like a big dollhouse; unlike the usual U.S. "rustic" theme, this was just a miniature house of finished plywood, maybe 12' square, with a small sink, a trickle of cold water, a toilet, a two-coil cooktop, and one dim fluorescent ceiling light. If you paid for the kitchen, you got a key to unlock cabinets with plastic dishes and cheap cutlery and some pots and pans, and if you paid for heat, you got a key to turn on an electric heater.
As time goes on I might be more and more inclined to do it again when traveling in the U.S., as the cost of shipping camping equipment even by ground has gotten to be really... prohibitive.
Annual income twenty pounds, annual expenditure nineteen nineteen and six, result happiness; Annual income twenty pounds, annual expenditure twenty pounds ought and six, result misery.