GSD hit on the freeway

This sweet german shepard was struck in the head by a car on the 210 freeway and no one bothered to help. I got him and rushed him to Inland Valley Emergency Clinic in Upland. He has lung contusions, head tramua, and he can not stand. He needs multiple days of treatment to see what is wrong. Our bill is currently estimated at a high of $4400, but it is growing. Please help me save this sweet boy!