People sleeping in cars, vans and motorhomes
I've been camping around Hakuba in a motorhome for a few weeks and I've noticed lots of people (predominantly Japanese) camping in all the carparks in a variety of vehicles (mostly not RVs, just regular cars).
Has it always been like this? This is my fourth visit but I've never RVed here before so I haven't paid attention to the carparks at night. Are the locals having to sleep in cars because the accommodation isn't sufficient to meet the demand? Is this just a standard tradition that I'm just noticing?