According to The Car Enthusiast (as cited in the "References" section), Alfa Romeo plans to introduce the 158, an automobile model, at the 2005Geneva Motor Show. The 158 would be larger and of higher quality than its predecessor, the 156. Guigiaro would have designed the 158, and it would be based upon Saab Automobile's "Premium" platform. The 158 would be available with either front or all wheel drive. In 2006, Alfa Romeo would release a four wheel drive GTA variant with a 3.2-litreV6JTSengine.
