Question: Which was made for a longer period, Buick Invicta or Buick LeSabre?

Context paragraphs:
Buick Straight-8 engine: The Buick Straight-8 engine (Fireball 8) was produced from 1931 to 1953 and sold in Buick automobiles, replacing the Buick Straight-6 engine across the board in all models in 1931.  Like many American automobile makers, Buick adopted the straight-8 engine in 1931 as a more powerful alternative to the previous engines.  However, unlike most other car makers at the time, Buick had been using a valve-in-head/OHV overhead valve design or I-head since its inception and continued this practice in their inline-8 designs.  The engine was sold in different displacements depending on the model of car and the year and was constructed upon two distinct (possibly more) block castings.  The smaller displacement versions internally resembled the inline Chevrolet straight six, with additional cylinders.  The large block version (the 345 and 320, used in large-chassis models such as the "Roadmaster") was considerably heavier and this weight adversely affected vehicle performance and handling.  In earlier years the engines used cast-in-place bearings that were then machined, which made engine rebuilding an expensive procedure, but after 1937 they began using drop-in bearings.  The last year for Buick's straight-8 was 1953, but only in the Special, as the new V8 322ci Nailhead became standard in all other lines in the same basic chassis.  Starting in 1954, the Special received the V-8 as well.

Buick Invicta: The Buick Invicta is a full-size automobile produced by Buick from 1959 to 1963.  The Invicta was a continuation of the Buick Century concept that mated the standard size Buick LeSabre (pre-1959, Buick Special) body with Buick's larger 401 cubic inch Nailhead V8 engine, yielding what was referred to as "the banker's hot rod."  The name was derived from Latin and signified 'unconquerable, invincible, unbeatable, unvanquished' according to Buick Motor Division sales training materials.

Santa Monica Farmers Market crash: On the afternoon of July 16, 2003, George Weller, then age 86, drove his 1992 Buick LeSabre westbound down Arizona Avenue in Santa Monica, California toward the city's popular Third Street Promenade.  The last few blocks of the street, before it ends at the ocean, had been closed to vehicle traffic for the biweekly farmers' market.

GM H platform: The H Platform, or H-body, name has been used twice by General Motors.  The 1970s H-body was an inexpensive rear-wheel drive compact automobile platform from the 1970s, used for the Chevrolet Vega and Monza and their derivatives.  The 1980s H-body was a front-wheel drive full-size car platform, and was the basis for GM's second generation downsized full-size cars, such as the Buick LeSabre/Electra, Oldsmobile 88/98, and Pontiac Bonneville.

Scraper (car): A scraper is an informal term to describe a modified American-made luxury/family car, usually a General Motors model from the 1980s to current vehicles, typically enhanced with after-market rims.  Scrapers are popular in the San Francisco Bay Area of Northern California, usually associated with the hyphy music and lifestyle movement.  An example of hyphy is shown in the E-40 lyrics "sittin' in my scraper watching Oakland gone wild".  A scraper is a general description and can refer to a number of different model cars.  Popular models include the Buick Regal and LeSabre, Pontiac Bonneville, Buick Century, Oldsmobile Delta 88, Buick Riviera, Buick Reatta, Oldsmobile Cutlass Ciera, Oldsmobile Cutlass Supreme, Pontiac Grand Prix, Lexus SC, Chevrolet Caprice Classic, and Chevrolet Impalas, as well as full size conversion vans such as the GMC Vandura.  Supercharged automobiles are particularly sought after due to their high performance.

Buick City: Buick City was a massive automobile manufacturing complex in the northeast of Flint, Michigan.  Elements of the 235 acre complex dated from 1904, where all aspects of Buick vehicles were constructed, and it became known as Buick City in 1985.  Operations ceased completely in 2010.  The site was vacated by GM employees and site responsibilities were transferred to Motors Liquidation Company as of December 6, 2010.  The final cars built at Buick City were the Pontiac Bonneville and the Buick LeSabre.  Manufacturing operations were transferred to Orion Assembly.

Distributed practice: Distributed practice (also known as spaced repetition or spaced practice) is a learning strategy, where practice is broken up into a number of short sessions – over a longer period of time.  Humans and animals learn items in a list more effectively when they are studied in several sessions spread out over a long period of time, rather than studied repeatedly in a short period of time, a phenomenon called the spacing effect.  The opposite, massed practice, consists of fewer, longer training sessions.  It is generally a less effective method of learning.  For example, when studying for an exam dispersing your studying more frequently over a larger period of time will result in more effective learning than intense study the night before.

Buick LeSabre: The Buick LeSabre is a full-size car made by General Motors from 1959-2005.  Prior to 1959, this position had been retained by the full-size Buick Special model (1936–58); in 1959 the LeSabre replaced the Special, a nameplate that was reintroduced in 1961 for Buick's line of compact cars.  The name originated with the 1951 GM Le Sabre show car designed by Harley Earl; that car is often mistakenly attributed to the Buick division, but in fact it was presented as a GM vehicle without reference to a specific GM division.  Buick closely related their 1956-1957 models to the GM LeSabre by replicating the top section of the rear wing into their design. .  The word "LeSabre" is French for sabre.

Buick Sport Wagon: The Buick Sport Wagon was a mid-size station wagon built by Buick and a corporate sister of the Oldsmobile Vista Cruiser.  Featuring a raised roof and skylights over the cargo and second seat area, this model was an extended wheelbase version of the Buick Skylark station wagon.  Buick Sport Wagons were built in three generations, spanning 1964–67, 1968–69, and 1970–72.  During this time period, this was the only luxury level station wagon offered under the Buick model line.  The last generation did not receive the skylights.

Buick Lucerne: The Buick Lucerne is a full-size luxury car that was made by General Motors.  The Lucerne served as Buick's flagship vehicle until 2011.  In 2012, the Buick LaCrosse became Buick's flagship model.

Supporting paragraphs: Buick Invicta Buick LeSabre
Answer: Buick LeSabre