how much does a car weigh in kg?
It could range from 730kg for a smart car to 2300 kg for a Cadillac de Ville.
http://en.wikipedia.org/wiki/Smart_Fortwo
http://en.wikipedia.org/wiki/Cadillac_Sedan_de_Ville
http://en.wikipedia.org/wiki/Smart_Fortwo
http://en.wikipedia.org/wiki/Cadillac_Sedan_de_Ville