200*70kg= 14 000kg.

Kevin Kofler (./6315) :
dans l'ordre de quelques % seulement

https://en.wikipedia.org/wiki/Trams_in_Vienna
A total of 16 type D trams were built. They were used until 1976 on Lines 9, 41, 42 and E2. They were cumbersome, due to their high weight (28 t (31 short tons; 28 long tons)), and were also otherwise unconvincing.

J'imagine que les trams récents sont plus légers... Or on était déjà loin des quelques pourcents...