You do not have to worry about the means of transporation from bhadrapur to kakarbhitta. You have plenty of options. But the best is taxi. You can hire a taxi at around 700 NRs. Bargain and do not give a slightest hint you are coming from USA. It takes around 20 to 25 min from BDR to KVT if you take the route of chandragadhi -charali- kakarbhitta. Do not go via Birtamode, that's a longer route. If you have any other query ask here I am more than happy to answer them....      Bon Voyage !!!