I've tried to take some rolling shot of my car... but it's really hard to take a good shot... any suggestion??

 

The first shot is a rolling shot and then edited to make it appear more blurry and moving faster.

The second shot is a rig shot, you can tell because there isn't even anyone driving the car.

Good rolling shots, you need a slow shutter speed (1/30th) and a decent f/ stop (4.0 will do) and take the picture either at dawn or around dusk.

 

What kind of camera are you using? I can tell you exactly how to do it even with bright light.

 

the way i do it is having 2 cars and from one car shoot the other one. Both cars at the same speed, your Focus Point must be on the car you want to shoot and a Slow shutter speed...the apperture is ideal 4.0+

 

Practice, practice, practice.

The rule of thumb for shutter speed is "1 over your speed" aka "1/your speed" so if you're going 30mph, you'd want to start with a shutter speed of 1/30. If you're doing 60, start at 1/60. Adjust from there to get the proper amount of blur. Also, use a wide lens and try to stay as close as you can to the car while maintaining the composition you're after. The further you are from the subject and the longer your lens, the more difficult it is to get a clean shot.