You can assume many things by looking at a person’s car. One of them is their economic condition. You can also guess if they like speed or if they have a large family. These things are not so clear and are just hypotheses; However, some people like to make their views very clear on certain subjects as they affix the exterior of their vehicles with stickers.
There’s an entire subreddit devoted to cars with crazy messages or stickers called The Cars of Infowars. People share pictures of cars heavily decorated with political signs or announcing their opinion about current world events. Some of them are so funny that it remains only to laugh at them.
more info: reddit