A social media app is now the center of a lawsuit after a teen driver’s car crash left another driver with severe injuries.

Christal McGee is accused of trying to capture her alleged 100 mile-per-hour speed for a Snapchat post while gunning her father’s Mercedes C230 in Atlanta last December. McGee, who was 18 at the time, crashed into another driver, Wentworth Maynard, whose lawyers say suffered permanent brain damage because of the incident.

Maynard’s lawyers are not only suing McGee for negligence, they are also suing Snapchat for allegedly encouraging McGee to drive at high speed.

In a statement to ABC News, Snapchat said, “We actively discourage our community from using the speed filter while driving, including by displaying a ‘Do NOT Snap and Drive’ warning message in the app itself.”

After the crash, McGee snapped a photo taken in an ambulance after she crashed where she’s seen in a head brace with the caption, “Lucky to be alive.”

According to ABC News affiliate WSB-TV, two passengers in McGee’s car say she was on the app before the crash. Heather McCarty told WSB-TV, “She said, ”Well I’m just gonna hit 100, and then I’m gonna slow down.’”

A third passenger claims McGee was not on Snapchat.

Since the crash, Snapchat has added a warning on its filter telling users not to speed. It appears the first time the user uses the app, and then every time they go at least 15 miles per hour.