General Motors is investing $175 million into its Lansing, Mich., facility to make replacements for three Cadillac sedans (ATS compact, CTS midsize and XTS full size). The company will replace the sedans with two new ones over the next three years. In 2017, ATS sales fell 39%, CTS sales dropped 35% and XTS sales were down 27%. GM said the new cars will debut by the end of 2021.

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