MOLTEN ROCK, or magma, and gasses spew from the mouth of a volcano in the Hawaiian islands. As rock inside the earth melts, its mass remains the same while its volume increases--producing a melt that is less dense than the surrounding rock. This lighter magma then rises toward the surface by virtue of its buoyancy.
Although each automobile dealer has the option to release new models at a time it chooses, most companies release new models between September and December every year. In addition, some brands are showcased earlier in summer car shows.
Analysts expect sales to begin late in 2015. The likely debut of the new Cadillac will be in January at the 2015 Detroit Auto Show. The car will compete with the Audi A8, BMW 7 Series, Lexus LS and Mercedes-Benz S-Class.