As we only use good vehicles, they normally do not break down. In the last 15 years + of our experience, we have had only few such cases, but we were able to replace it soon or right away. It takes us 1-2 hours to arrange the replacement vehicle, plus the time taken to get to the place where the vehicle is stranded, from Thimphu or nearby town. However your guide can usually seek help from our local contacts such as our hoteliers, staffs, their family members etc in local area and make instant arrangements until the replacement vehicle arrives. So, it is unlikely that that you will have to wait all that long. Even during such short wait, our Guide will find something interesting to do nearby that you will ever realize the wait period. We do realize the importance of each little moment for you in Bhutan.