I couldn't find any citations that mention molybdenum as a way to increase metabolism of caffeine. However, I found one reference [0] that mentions, "Consumption of broccoli and brassica vegetables in general and absorption of large quantities of vitamin C increase caffeine clearance".

EDIT: It would seem that the vitamin C paper [1] concludes the opposite of what [0] states. "These results indicate that the elimination of caffeine in the elderly is not affected significantly by the concentrations of vitamin C achieved during this study."

    [0] https://www.coffeeandscience.org/health/coffee-and-caffeine/caffeine-and-metabolism
    [1] https://pubmed.ncbi.nlm.nih.gov/7064899/