A Georgia family is suing popular social-media app Snapchat, saying a feature on the app contributed to a crash by encouraging a teen driver to use it while driving faster than 100 miles per hour.

Wentworth Maynard was pulling onto Tara Boulevard in Clayton County in September when he was rear-ended by 18-year-old Christal McGee.

McGee and her three passengers suffered various injuries, but Maynard ended up in a coma, spent five weeks in intensive care and has permanent brain injury, according to his attorneys.

“Our client has suffered permanent and life altering injuries as a result of this wreck,” Henningsen Injury Attorneys said in a Facebook post.

The firm did not immediately return a request for comment for this story Thursday morning.

At issue is Snapchat’s “speed filter,” which lets users post photos showing how fast they are moving at the time of the snap.

The feature uses a smartphone’s sensors to read the speed and gives users virtual trophies for posting at various speeds.

Passengers in McGee’s vehicle have said she was trying to take a picture of herself while traveling over 100 mph when she hit Maynard.

“I’m like, ‘What are you doing? Slow down!” Heather McCarty, a co-worker of McGee’s who was catching a ride with her that night, told WSB-TV.

McCarthy told the station she saw a speed of 113 mph on McCarty’s phone at one point and that McCarty told her she was trying to get Snapchat photo of herself going more than 100 mph. The speed limit in the area was 55.

“I just remember screaming, ‘There’s a car!’ ” she said. “I think it’s very dangerous and I think a lot of people are unaware of the dangers of it.”

The lawsuit claims McGee was going 107 mph when she hit Maynard and that Snapchat “facilitated McGee’s excessive speeding” and distracted her.

Snapchat did not immediately respond to a request for comment for this story Thursday morning. The company has declined comment to other media, citing pending litigation.

A warning when users first open the speed filter feature urges them not to use it while driving.

Maynard’s lawsuit is seeking unspecified damages from McGee and Snapchat, which it claims encouraged her to drive recklessly.

Initial reports from the Lovejoy Police Department suggested Maynard was at fault for pulling out in front of McGee. But later interviews with passengers revealed how fast she is believed to have been driving and that she was using her phone.