A mother and son died in a car wreck early Sunday morning on I-75 in Marion County.

Troopers say the car that the mom and son were riding in was rear-ended in a hit and run crash.

According to authorities, as the mom and son were trying to get out of the car, a tractor trailer came along and couldn't avoid the car. The trailer hit the car with the mom and son inside and both vehicles became engulfed in flames.

The truck driver was able to get out, but the mom and son died in the fire.

Two other people got out of that car okay.

The driver of the tractor trailer wasn't hurt.