Car stock photos can be very sell-able.
Many companies are in desperate need of car photos that they can actually use.
You can't just go and take a picture of any car.
You need releases and other important legal information.
That is why stock photos are so convenient for people that need photos of cars for businesses and other public venues where they need pictures.
If you want to take better stock photos of cars you should treat the pictures with extreme care.
Cars are like people, they need to be lit properly and positioned in the right way in order to take a good picture of them.
Also like people, cars are made to look a lot more attractive in pictures and commercial advertisements than in actual real life.
Of course, cars that look good on TV usually do look good in real life.
Lighting is a very important factor when taking stock photos with cars in them.
Most likely you will be using the suns lighting for cars.
Of course, you can use expensive professional lighting to light cars but you will need a studio for the car to go into where you control the light, strong lights to illuminate the entire car, etc.
Taking photos of cars in the sunlight is your best bet.
Most cars have one major problem when being photographed - they reflect.
If you take a picture of a car and it is right next to a fast food restaurant you may get the fast food building in the windows and even the somewhat reflective car body itself.
This is going to be very difficult to fix without filters.
A polarizing filter will get rid of reflections and is extremely necessary for taking pictures of cars.
When taking pictures of cars pay very close attention to the lines.
Treat the lines as if they were lines of the background and use them to lead to the main focal point.
Maybe the focal point is the car company logo at the front.