Exhausted after endlessly spending the same day over and over in debauchery, seduction, and eventual ineffective suicide attempts, Phil changes. Every day he befriends an elderly dying homeless man, catches a boy falling from a tree, performs a lifesaving Heimlich Maneuver, encourages a soon-to-be-married couple having cold feet, etc. During his busy day, he learns to play the piano and ice sculpt, and falls in love with Rita. One day, Rita, dazzled by the change in Phil, "buys" him for the evening in the fund-raising bachelor auction. That evening she sees the change in Phil and learns of his love for her; they eventually fall asleep in Phil's bed without "doing anything." He has finally lived the day perfectly; he wakes up on the day after Groundhog Day with Rita in his arms.
Guy Holladay
Answer: We know the police car survived because unit 2 is the car that followed them onto the tracks, and unit 2 is also one of the cars present when they are stopped (though it came from the wrong direction). The movie doesn't explain how the car survived so it is left to the viewer's imagination.
jimba