Which the best Taxi/Car Rental Agency, from Guwahati, that is professional, responsive, and cost effective to provide a taxi: Maruti Swift or Tata Indigo AC for an itinerary of Guwahati-Nameri-Kaziranga-Shillong-Mawlynnong-Cherrapunjee-Shillong-Guwahati for 8 days? What are the typical charges on per day basis? How many KM of travel is permitted? Is Maruti Swift a dependable make for hilly terrain? Many thanks to you all.