This is the dramatic moment an allegedly drunk man driving on the wrong side of a motorway caused a fatal multi-car crash that killed a mother-of-one.

The footage, filmed from the inside of a car in the opposite lane, shows a vehicle along the I-20 freeway in Duncanville, Dallas, and crashing head-on into oncoming vehicles.

‘’I told you he was going to crash anytime,’’ a man can be heard in the background.

The man then pulls over on the right side of the lane and dashes over to the scene.

Passers-by can be seen desperately trying to extract a woman who got trapped in her car and assisting victims of the crash lying on the ground.

The wrong-way driver’s car then goes up in flames as ambulances are heard arriving at the scene.

The suspect, who is recovering in the hospital, has been charged with intoxicated manslaughter.