Constructing a house from lumber and drywall can take months or even years—but in Japan, Toyota is erecting entire homes from pre-built segments faster than some people build Ikea furniture. A video of the process shows workers using a crane to drop room-sized units into place like Master Builders inThe Lego Movie.According to husband-and-wife vlogger duo Rachel and Jun Yoshizuki, who filmed the construction process and uploaded it to YouTube, the prefab units are built in a factory and trucked out to an assembly location. The entire construction process, they say, is only 24 hours—though it takes a few more days to round the whole house out with electricity, flooring and paint on the walls.Another clip by the Yoshizukis shows the interior of one of the homes, which is spacious, and tastefully outfitted. A Toyota web page provides a few more photos of the interior.The segments of the home appear to each be about the size of a room, complete with electrical fixtures, windows and closets. The video shows workers bolting the segments together to form a house, attaching siding, and even adding a second-story deck as a finishing touch.There are few references to Toyota's prefab houses in the English-speaking media. According to a book about construction engineering published earlier this year by two German scholars, each room of the modular Toyota home is made up a steel skeleton, which provides structure, and interior components like appliances and furniture, which are called "infill."