2. Pontiac G8 GXP
The Pontiac G8 GXP was a high-performance sedan that combined a 6.2-liter LS3 V8 engine with a six-speed manual transmission, delivering 415 horsepower and 415 lb-ft of torque. This setup enabled the G8 GXP to accelerate from 0 to 60 mph in just 4.5 seconds. Despite its impressive performance, the G8 GXP faced an abrupt cancellation due to General Motors’ bankruptcy and the subsequent discontinuation of the Pontiac brand in 2009. This left the G8 GXP without a direct successor, though its platform influenced the Chevrolet SS, which debuted in 2014. The SS retained the same engine and similar performance characteristics, serving as a spiritual successor to the G8 GXP. (hagerty.com)