## Walmart cheapie evap

A prototype car empty weighs somewhere in the neighborhood of 25-30 tons. Assume an empty car weighs 25 tons. A forty ft box would weigh about 25 tons and acording to NMRA practices would be about 4 oz. So say 25 tons = 4 oz.. A 50 ton car would be the car weight plus 2 lading weights and a 100 ton car would be the car weight plus 4 lading weights.