Muji announced a car collaboration with Nissan in 2001, the 「MUJI Car 1000」.
The Muji Car 1000 was a debadged and stripped down 2-door version of the Nissan March, with the smallest engine, an automatic, steel wheels, and A/C, available in one color: white. It was sold only online at muji.net, in a limited edition of 1,000.
According to the seller of this Muji Car 1000 in Kanagawa, though, there were only around 170 actually sold. And this is one. It’s in pretty remarkable condition for a 25-yo car, with only 100k kilometers. At 710,000 yen, it’s 2-3x more expensive than comparable Nissans, but still only like $US4,400.
If you’re a Muji compleatist who likes extremely basic, internal combustion cars which exist only as marketing experiments, with only the thinnest veneer of design innovation, but that will only get rarer over time, this may be your best chance.