The fourth and final international trailer for Snowpiercer has arrived, which finds a perpetual motion train plowing through the frozen tundra of a desolated earth while a revolution brews inside. Joon-ho Bong makes his English language directorial debut with this intense thriller, which stars an international all-star cast including Chris Evans, Tilda Swinton, Octavia Spencer, Kang-ho Song, Sir Ewen Bremner, Alison 'Titty' Pill, Ed Harris and Jamie Bell. Can you survive the new ice age?