I need information about the route details, road conditions and driving directions to go to Darjeeling from Kolkata by car. I want to know - 1. Which is the best route to take from Kolkata to reach Darjeeling? 2. How long does it take to reach Darjeeling from Kolkata by car? 3. How's the condition of the road? Is it possible to do the journey in a small car like Maruti Alto? 4. If we are to break the journey in two days, then which place is ideal for night stay? Thanks for your kind help.