On December 15, 2017, this car was sold at auction for $42,000 to a dealer in Florida. A preview of the planned replacement for the Alero was seen in 2001 with the unveiling of the Oldsmobile O4 concept, designed by Bertone. The car was an open-top 4-seater with European styling featuring some Oldsmobile traits, and powered by the latest "Ecotec" I4 engine. The name had multiple meanings, including "Oldsmobile 4-Seater" as well as implying the year 2004 as a planned date for production. However, the O4 concept was unveiled a few weeks after General Motors announced that they would be phasing out the Oldsmobile brand, meaning that production possibilities of the O4 would never be realized. Because of this, a second generation Alero was never built and the car was phased out with the Oldsmobile brand in 2004. During its production, the Alero was available in four trim levels, all available in coupe or sedan body styles:  The GX was the most basic trim level of the Alero. It included such features as a 2.4 L inline four-cylinder engine, 5-speed manual transmission, an AM/FM stereo (later, AM/FM stereo with single-disc CD player) with a four-speaker sound system, 15-inch (38 cm) black-painted steel wheels with decorative wheel covers, manual windows, power door locks, full instrumentation, air conditioning, velour door panel inserts, and cloth seating surfaces. The 3.4 L V6 engine available on all other Alero trim levels was not available on the base GX trim level. The GL was the midrange trim level of the Alero. It added the following features to the base GX trim level: an AM/FM stereo with cassette player (not applicable for later models), power windows, and 16-inch (40 cm) alloy wheels. The 3.4 L V6 engine was available as an option, though was standard equipment on the GL2 trim level. The GL1 trim level also offered the V6 engine option. The GLS trim level was the "luxury" trim level of the Alero. It added the following features to the already well-equipped GL trim level: an AM/FM stereo with cassette and single-disc CD player (later, an MP3-decoding single-disc CD player was added), an eight-speaker "premium" sound system with amplifier, keyless entry, power driver seat, leather upholstery and a security system.