Jim Cramer, host of CNBC's 'Squawk On The Street', has criticized Tesla's Cybertruck, calling it a toy for Elon Musk fans and the ugliest vehicle he's ever seen. He also noted that the recent reduction in production estimates from 250,000 to 200,000 Cybertrucks per year could disappoint Wall Street. Despite his criticisms, Cramer acknowledged that he's optimistic about the Cybertruck's potential and believes Tesla has created an entirely new category of vehicles.