• Well we have:

    • Snakes on a Train (2006)
    • Zombies on a Plane (2025) - OJ’s last film?

    And Train to Busan is basically Zombies on a Train.

    So there is plenty of room for more, in the way people went wild after Cocaine Bear.

    I’d add to your suggestions with:

    • Walrus on a Tourbus
    • Fairies on a Ferry
    • Yeti on a Cable Car
    • And a whole car based spinoff series (not all of which are quite as scary):

      • Pandas in a Fiat Panda
      • Vipers in a Dodge Viper
      • Jaguars in an E-Type
      • Stag Beetles in a VW Beetle (and the out of sequence, fan-favourite instalment: Stag Beetles in a Triumph Stag)
      • Male Horses (under four years old) in a Mitsubishi Colt