Boys and girls,
DO NOT put your car on grass when you shoot it. That violates "Car Photos 101" in a big way. Always keep it on a roadway. Roll the windows down and wear a seat belt when driving it. Ideally, have someone with a Nikon follow you as you're driving, using a somewhat slower exposure and a tripod in a convertible, and that will show moving wheels while clearly showing the car. You will need to overexpose maybe 1/3rd. an F stop and depending on the light, use a 15% warming filter (or let Photoshop do its thing). Lighting is very important, but you really can't shoot a black car in an overcast condition. Use spotty sunlight directly positioned to reduce shadows. Shooting at 2:30 to 3 pm with the sun behind you yields the best contrast, and a blue sky with some clouds is perfect as long as the sky turns up in the image a bit.
Find a nice day and shoot till the turbos stop screaming.