A teenager has been accused of using the app Snapchat moments before a crash that left a motorist brain damaged.

Christal McGee, 18, was allegedly using the app’s feature “Speed Filter” whilst she was behind the wheel. The speed filter has been created to inform followers how fast the user was moving at the time the photo was taken.

Moments after the crash, she continued to use the app sending followers a picture captioned “lucky to be alive.”

Wentworth Maynard, the motorist who was involved in the crash now requires constant care from his family after he was left with brain damage.

His wife Karen said: “We used to sit on the sofa and watch TV in the evening, and Wentworth would hug me. Now, he can’t do that anymore.”

Miss McGee and her passengers were taken to hospital but only suffered minor injuries. Mr Maynard’s family from Georgia US, are also targeting the popular mobile app Snapchat in their legal action against the teenager.

The Maynard’s solicitor has said: “This is a product liability case because Snapchat put something very dangerous in the marketplace without any warnings or safeguards. McGee wanted to post an image of herself going fast.”

Miss McGee has also been accused of stating she wanted to get her car to 100mph to post it on Snapchat.

The tech giant has responded to the court action denying that the filter encourages dangerous driving, stating: “No snap is more important than someone’s safety.

“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.”