Article continues below advertisementIn a tragic turn of events, late NASCAR star Greg Biffle's wife, Cristina Biffle, sent her mother a chilling text just minutes before their plane crashed. Cristina messaged her mom saying, "We're in trouble," as reported by People.Article continues below advertisementSource: NASCAR/YouTubeGreg Biffle was a successful NASCAR race car driver.Article continues below advertisementGreg's mother-in-law, Cathy Grossu, revealed that this was the last communication she received from her daughter before the devastating plane accident.