Authorities say the officer had just finished up a traffic stop when he was hit from behind.
More than a dozen vehicle were broken into over the weekend.
Adults were found passed out from drug use.
18-year-old draws seven year sentence.
Jacob Shepard faces up to seven years in prison for stealing and four years for property damage.
The top bid for the 1959 Mercedes convertible at an auction in August was $143,000.
Tree fell on top of car after crash near Nebraska and Osceola.
Vehicles badly damaged, no word on injuries.
An officer in the patrol car escaped injury.
Adults had gone inside local restaurant to eat; heat index was 113 when police arrived