OP is referring to the likelihood that a blizzard blows through the prep kitchen as opposed to the likelihood of a hard rainstorm on the 101 during the morning

OP is referring to the likelihood that a blizzard blows through the prep kitchen as opposed to the likelihood of a hard rainstorm on the 101 during the morning commute. Self-driving cars have to reliably cope with a wider range of uncertainties than a robot cooking burgers in a carefully controlled (by comparison) environment.