If you like to take photos, and you can learn, or know more than the average person about taking pictures than you could start your own mobile photography service business. You could easily go to your local library and check out several books on taking photos yourself.
You would be starting on your way to becoming an expert, after reading all the books you can get your hands on. Just because the average person would never read, even one photography book, and you will learn so much more than the average Joe on the street.
When you can get the equipment necessary to take quality photos, you can make up a flier and offer your services to wedding chapels, jewelry stores, tuxedo rentals shops, schools, mobile DJ's and more. You should include a sign on your auto, so others can call you for an appointment. For more information regarding photography business, you can also navigate to http://landryphoto.com/.
You should take full advantage of all the free classified websites that let you put Free ads up, you can simply copy one ad, and post it over and over into other similar websites you can find. You should have some magnetic vehicle signs made up to put on your ride, so others can easily find you easily when you are driving around.