At 8 am Wednesday morning, an 18-wheeler loaded with stone was turning into the Rock Yard on US 59 feeder southbound just south of FM 1485. With his turn signal on the driver just started his turn when he spotted a white Cadillac Escalade coming up on the rear at a high rate of speed. The driver attempted to speed up but it was too late. The Escalade slammed into the rear of the truck. A male and female were entrapped. Both were taken to Memorial Hermann in The Woodlands in critical condition.