What camera are you using? I think the first thing to notice is that the subject, the car, is under exposed. This means it isn't standing out as much as it should be.
The good this is that you're using a tripod, so you can use a longer shutter speed. A good trick is to put the camera on a delay so that you can press the button and give the camera time to stop wobbling before it takes the picture. Night time pictures are always harder so I look forward to seeing some daytime shots