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.
The Roadster, Tesla's flagship sports car, made waves when it was released in 2008. The Model S, the sports sedan released in 2013, earned the distinction of Motor Trend Car of the Year. That year, the Model S outsold the Mercedes Benz S Class, the BMW 7 Series, and every other large luxury sedan.