I use an a35 and my brother's a57. you can try a few things:
If you use a slow shutter speed use a tripod.
If you don't use one try to go faster than 1/80.
If you need to bump up the ISO go up but if you go 800 or above depending on your camera it might be too noisy.
For what you want to make you need to find the right amount of lighting to fall on your car and the ideal f/stop for the brightness of your lights. The higher your f/stop the sharper the lights will be but the darker the picture will get.
I am not an expert so if anyone spots a mistake on my advice feel free to make some corrections.