General Motors said Thursday it will end production of the gas-powered Cadillac XT4 in January as it shifts production at its Kansas plant to electric vehicles.GM is investing $390 million at its Kansas assembly plant to build next-generation Chevrolet Bolt EVs.GM will end production of the gas-powered Cadillac XT4 in January. Tamara Beckwith/NY PostGM is investing $390 million at its Kansas assembly plant to build next-generation Chevrolet Bolt EVs APGM plans to end production of its Chevrolet Malibu in th ...