A 14-year-old stole his grandfather's car near Salt Lake City on Saturday, then led police on a high-speed chase through a residential neighborhood. At one point, he even sped through a PARK where kids were playing.

Luckily, someone in a huge Dodge Ram pick-up truck decided to do something about it . . . and stopped him by intentionally crashing into his car head-on.   Luckily, no one was hurt.