Complex sentence: They then kidnapped Miklós at gunpoint, trussed him up in a carpet, and immediately drove him to the airport and flew him to Vienna and from there he was transported to the concentration camp at Mauthausen.
Split into simpler sentences: They then kidnapped Miklós at gunpoint, trussed him up in a carpet, immediately drove him to the airport and flew him to Vienna. From there, he was transported to the concentration camp at Mauthausen.