I am typing on my phone, so saying sorry for any errors in advance.
Honestly, a good decision to go with railways as against roads/highways. Let me put in a brief explanation and details will put later.
Railways - are inherently more efficient per km/ kg than an equivalent vehicle. Example - at 72 people per carriage a 26 carriage rake can move - 1872 people with their luggage from Pune to Mumbai (example) that’s about 150 kms At 6 liters per km - 900 litres od diesel. If 1872 people took cars / each car carrying 4 people - 468 cars, let’s say each car has FE of 15, that’s 10 litres per car - 4680 litres of fuel. If I consider the WDM3 series at about 12 lpk - it still