Which is not as easy as it might seem. In the first place, it helps greatly if the cars are depicted accurately. Otherwise, knowledgeable potential painting buyers might not be willing to buy. From an artistic standpoint, there is the matter of backgrounds or settings for the featured car or cars. An easy solution would be to paint a simple, generic sort of background -- perhaps a golf course or ocean coast -- and focus effort on the subject. But that would seldom result in an aesthetically satisfying painting.
Rowe, a largely self-taught British artist, places a great deal of effort on the settings as well as the subject cars. How well this works is discussed in the captions below.
As for Rowe's background, this is worth reading as well as this interview. In that interview, Rowe states:
"I take stacks of photos of old cars and lighting etc. It could be the background that starts me off or it could be the car and then I find a background. The lighting is never dead right. You have the light coming at an angle on the car and other lighting coming from the background. You have to get it altogether properly, otherwise it's not believable. I like old pictures of nice dresses and something romantic in a way that isn't there now."