What you backed into was the product of gymnosperm secondary (woody) growth. When your car ruptured the fragile secondary phloem, you interupted the plants sucrose transport, thus debilitating the roots. The car had sufficient momentum to unfortunately break the plants secondary xylem as well, this permanently disrupting the passive, uniterrupted water column. Had the tree not been uprooted, it would have died slowly from malnutrition.
Translation:
MURDERER.