"The Ninety-Eight was yet another solid piece of proof that American buyers were going crazy for massive landyachts throughout the 60s and the 70s. The ninth generation, introduced in the early 70s, packed a massive 7.5L V8 beneath the hood rated at a whopping 320 horsepower.
"This overpowered piece of steel was very large, too. Units built between 1974 through 75 were the longest of them all, measuring a whopping 232.4 inches [5.9 metres] in total! To this day, it remains the largest Oldsmobile ever produced." (brakeforit.com)