Monday - Friday, 6:00 - 7:00 PM ET Celestica CEO Rob Mionis explained how his company designs and manufactures infrastructure that enables artificial intelligence in a Tuesday interview with CNBC's Jim Cramer . "If AI is a speeding freight train, we're laying the tracks ahead of the freight train," Mionis said. He pushed back against the notion that the AI boom is a bubble, saying that the technology has gone from a "nice to have" to a "must have." Celestica reported earnings Monday after close,