There are not a lot of traffic lights and crosswalks. Most sidewalks have very large holes that you could fall into if you're not careful!
There are sometimes unpaved roads, and it is easier to use a motorcycle to drive through dirt paths. Gas for motorcycles is affordable. Some people sell gas on the side of the street to make refueling easier.
Padang is located on Sumatra, which is a very big island in Indonesia! On smaller islands, using a boat to get to one island to another can be faster than driving across bridges.