The Thar Roxx is a hardy car capable of much more than light off-roading. It tackles bad roads and potholes brilliantly and is a good weekend car. However, there are two issues for your parents. One is the step in height. The Thar Roxx sits high off the ground, which can be a problem for elderly people getting in and out. The second is that the ride can be pretty bumpy on a bad or uneven road, but if your parents are healthy and fit, I am sure they will take this all in their stride. The bigger danger for your parents is your intent to drive at speeds of 130-140kph. This is dangerous on public roads in India, and we urge you to drive safely so you and your family can enjoy many road trips together.