I genuinely hate to say it…. But…… I've been following this thread and feel all [americanism] conflicted [/ americanism] about it.
My Dad is a serial offender in this way. He has a camper van, a beaten up old Iveco Daily van and a penchant for European / Eastern block 4X4 vehicles.
He parks them all over Edinburgh and often leaves them for months at a time – all taxed, insured and motted. He's been visited by the cops countless times to inform him of multiple complaints from neighbours, but they leave once they've been assured everythings legal and that the vehicles aren't abandoned – nothing they can do.
My Dad is a truly lovely bloke and helps out anyone who asks. He just can't see why people get annoyed by having a rusty hilk parked in their leafy suburban street. He laughs off the complaints saying things like, "Oh – they should be grateful – it's not every day you get to see an UMM (odd, massive Portuguese jeep thing)!"
The only way of getting him to shift a vehicle is to damage it. He fizzes and spits, takes it very personally and is genuinely hurt / bamboozled. Like I say, he just doesn't get it.
It really does pain me to say it, but if your camper van owner is the same as my Dad, it'll stay there until something bad happens to it. Then it'll be gone by the next day….