Original sentence: One of possibilities is using the body of Audi's D2 platform A8 (1994-2003) Audi A8 or sports sedan S8 (1998-2003 or older European market models wheres German model weights 1730 kg) Audi S8 both of which are all aluminium monocoque "Audi Space Frame" vehicle, which helped to significantly reduce weight without being any less rigid
Edited sentence: One of possibilities is using the body of Audi's D2 platform A8 (1994-2003) Audi A8 or sports sedan S8 (1998-2003 or older European market models where the German model weights 1730 kg) Audi S8 both of which are all aluminium monocoque "Audi Space Frame" vehicle, which helped to significantly reduce weight without being any less rigid