impossible!!!.ICF kapurthala has capacity to produce 4000 coaches per annum and chennai has less than 2500.so 50000 is impossible.just think yar if they produce 50000 coaches per year then all train will get lhb fied in 2-3 years including pessenger train.50000 is too much quantity.i think suresh parbhu ne 5000 coaches kha hoga.