(Milwaukie, OR)  --  A woman is being treated at a Milwaukie hospital after being injured in a hit-and-run crash.  Police say the 18-year-old woman was pushing a child in a stroller along Southeast Linwood Avenue around 6:15 yesterday evening, when a car ran onto the sidewalk at high speed and struck her before speeding off.  The woman pushed the stroller out of the way before she was hit, and the child was unharmed.  Police say the car is a black Toyota Camry with a broken right headlight, driven by a tall man in his early 20s.