Photographing a car with your iPhone when it's hurtling 100 mph down the track might not be as simple as snapping a selfie. But with the right technique, it's not all that hard. The result is at once kinetic and dreamlike.

The secret? Using Slow Shutter Cam to capture multiple-exposure photos, like those you see here.

To test it out, we headed to a Formula Drift race in Long Beach, Calif., with an iPhone X in hand. Here's what we learned.

Start by downloading Slow Shutter Cam and tapping the gear icon in the lower left. Then make the following adjustments to your settings:

• Capture Mode set to “Motion Blur”
• Blur Strength set to around 50 percent—or to your own taste. The higher you crank this, the longer the motion trail will be.
• Shutter Speed set to “1/2 Second.”
• ISO set to “Auto” (push that slider all the way left)

Next, set the resolution of your shots by tapping the three-line icon and going to “Photo Resolution.”

Selecting “HD1080 (120 fps)” will result in a larger, more detailed file. The motion blur won't be as smooth as selecting a lower frame rate, like “12MP (30 fps),” but it still looks great. You can see examples of both resolutions below.

With the cars zooming by at these speeds, you literally have a split second to get the shot. Your position is crucial. Find a spot where cars are moving across the frame rather than toward or away from it. Keep the sun and other light sources behind you or to the side if possible; silhouettes just make the resulting layered image muddy.

And don't worry if you're sitting farther from the action than you see here. A bird’s-eye view is just as compelling.

You've got two options here. Either keep your iPhone still to let the cars zoom through the frame, or follow a car with your camera as it races by.

The former yields a crisp background with blurred action; the latter yields the reverse.

Remember, these cars will loop around the track a lot on race day, so play around and see what you get.

After you snap the photo, tap “save.” If you don't, you'll end up with photos of multiple laps layered over each other in a single image. (You can change this behavior in the settings menu.)

Don't forget to keep an eye on all that beautiful smoke. It'll add serious drama and excitement to your shot.