Mansion in a box

Modular homes have been around since the first trailers sheltered migrant workers in the 1920s. But the stigma of double-wides and flimsy suburban boxes is being blown away for the money-conscious Lexus set, who can now order their dream homes off the shelf -- such as the 7,200-square-foot French country mansion that recently came together in 32 hours in Bethesda.

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