Thunder Express translates as Dundertåget in swedish. It’s the post The Hellacopters domain of guitarist Robert "Strings" Dahlqvist and his fellow band members in Thunder Express, Robert Pehrsson from the metal band Death Breath on guitars, former Diamond Dogs drummer Jesper Karlsson along with bassist Jens Lagergren of Hello Saferide and I Are Droid.

Dundertåget released their debut album "Skaffa Ny Frisyr" on the 18th February 2009. It consists of 8 songs from the thunder express album Republic Disgrace but in Swedish and 2 new songs. They were all written together with swedish singer/songwriter Stefan Sundström.