Lagest car..

This is the largest car......
The term "land yacht" began to appear in the late 1950s, as full-size luxury cars began to grow in size independently from mainstream nameplates.[7] Initially descriptive of the high level of comfort features and soft ride, land yachts were designed "for the open road where living room-comfortable seats made the front seat seem like a plush couch with a windshield and steering wheel in front of it."[7] Following the fuel crises of the 1970s, the land yacht term had negative connotations, primarily referencing the poor handling (as a consequence of the soft ride), unwieldy size, and vague steering.[7]

During the 1960s and 1970s, land yachts of various types were produced by nearly all American automobile manufacturers; the largest were offered by Cadillac, Lincoln, Imperial and Buick.[8] During the 1970s, many examples were denoted by a "Brougham" trim level.

The oil crisis of the 1970s brought the first wave of American-produced cars underwent downsizing, coinciding with a shift by consumers away from glamour alone towards quality, feature content, and fuel economy. For example, American Motors' last full-size car was a redesigned 1974 Ambassador on a 122 in (3,099 mm) wheelbase offered only in Brougham trim level that was discontinued after one model year as consumers shifted toward more economical cars.[9][10] Following the 1979 oil crisis, US car manufactures again "struggled to redirect the inertia of bigger cars and engines."[9] The New Yorker, the pinnacle vehicle of the Chrysler brand with a 124 in (3,150 mm) wheelbase and a 440 cu in (7.2 L) V8 engine was discontinued after 1978. In 1991 and 1992, respectively, General Motors and Ford would introduce redesigned full-size cars for the last time. After the 1996 model year, General Motors phased out production of the Buick Roadmaster, Chevrolet Caprice, and Cadillac Fleetwood[11] (with the Ford Crown Victoria, Mercury Grand Marquis, and Lincoln Town Car outlasting them by 15 years).

Excluding limousines, the longest American-produced production sedan is the 1973 Imperial LeBaron, at 235.3 in (5,977 mm) long. The longest-wheelbase car ever produced in North America, at 133.0 in (3,378 mm) long, is the 1971-1976 Cadillac Sixty Special. At 5,712 lb (2,591 kg), the heaviest American-produced car (excluding trucks and SUVs) is the 1967 Lincoln Continental convertible. As of 2019 production, these remain the largest vehicles ever produced by American-market manufacturers.