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.
Top 10 Best-Selling Cars: February 2015. It was a hard month, weather-wise, for big portions of the U.S., but that didn't stop shoppers from snapping up cars and trucks at a breakneck pace. For the second month of 2015, the top seven automakers have reported that sales increased 4.9 percent versus February 2014.