Hello Kevin,
First off ...Go to Curt Scotts Cobra Country Website.
http://www.cobracountry.com/home2.html
Click on his tips for taking pictures of your Cobra ---Read, & heed and you will get a primer on how to take pictures of your car.
As the guys indicated the background is important and back to your original question use a location that is not busy but, will give you a consistent color to frame your car in. Sunrise and Sunset are the best light to highlight the curves of the car.
Have fun.....
Tony R.