Yes, you can! A general rule: The smoother the surface, the better it sticks!
On smooth surfaces, interior wall decals will last longer and stick better than on rougher/coarse surfaces. They also stick very well on glass or mirrors.
If you are not sure, if the surface is smooth enough, then apply a free test sticker first. You will get one with every decal ordered, or you just ask us for a free sample before you order.
You can even stick wall tattoos onto your car. But be aware that due to weather conditions, sunlight, etc. the wall decal lasts only about 5 years on your car.