Since it happens to be a part of the Asian Highway Network which is supposed to connect all Asian countries - we can very well expand the route Laos, Cambodia and Vietnam too just by switching the highways under this network.
Asian Highway Network - Wikipedia, the free encyclopedia
India-Myanmar-Thailand Highway to be extended to Laos,Cambodia ,Vietnam
Meanwhile India and ASEAN have made considerable progress in enhancing connectivity cooperation, including beginning negotiations on the India-Myanmar-Thailand Motor Vehicles Agreement which will make the journey even more convenient with much less paperwork!
India-Myanmar-Thailand motor vehicles accord in offing | Business Standard News
He was talking about expenses for the ride I think.