To be frank, Hyderabad is a safe city. So mostly you will not find any trouble but it is better to be prepared so here are my few suggestions. Most important is to avoid distracting the driver for your own safety! And please do not ask the driver to overspeed. Also, be considerate if the driver doesn't know all the routes. It is humanly impossible afterall. Wear seat belts. Listed to music at normal volume. Keep a map of the route or cross the route on your phone's map as well. Ensure that your phone is in working condition. Remember to carry your ID proof all the time while holidaying.