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Stealth minivan is the way to go.
These days you can get legitimate batteries straight from Amazon and run anything you want.
With battery isolators, solar panel, and an electric driven a/c compressor ($1000 installed by mechanic) you can have climate control and infotainment system running with the car off.
I’d recommend 100% tint on the back windows and a rear view mirror cam.
You can get a diesel heater for the winter too.
3 gallon water jugs with a usb pump for fresh water and another to catch grey water.
Get a 12v cooler and just run it all the time off the house batteries.
Use an iPad as a tv/gaming system, bring a laptop too.
You can run a 1200w k-cup off of the house battery for single cups of coffee/hot water. You can get a 300w hot plate for reheating sausages or egg bites. You can get a usb-c powered ninja blender.
3 x $100 pieces of sanded plywood for cabinets and a $100 “trucker” mattress.
Basically an $8k minivan, $1k a/c compressor, $2k battery and $1k of Amazon plug and play type stuff, plus bring your own devices. Remove all the seats, build cabinets and bed platform to fit.
Add a shitty little hideaway rv toilet and technically you have a full legal rv conversion which means insurance is like $25 per month.