Another theory is that the mantle flows neither in cells nor large plumes but rather as a series of channels just below the Earth's crust, which then provide basal friction to the lithosphere. This theory, called surge tectonics, became quite popular in geophysics and geodynamics during the 1980s and 1990s.
General Motors to discontinue Chevrolet Tavera, Sail and Enjoy in India. According to a report in ET Auto, General Motors is planning to discontinue the production and sale of three Chevrolet products, Tavera, Sail and Enjoy in order to make way for newer products that the company plans to launch in the coming months.
6 killed in GM cars with faulty ignition switches. Story Highlights. At least six people have died because of accidents involving faulty ignition switches in General Motors compacts, prompting the big automaker to recall 778,562 of its 2005-2007 Chevrolet Cobalt and 2007 Pontiac G5 compacts in North America.