Milwaukee police said the crash happened around 5:39 p.m. A 2018 Hyundai Elantra was traveling at a high rate of speed when it crashed into a tree and split in half.
One of the occupants is 14 years old. The other two are 15. They are all in critical condition.
Authorities said the vehicle had been stolen out of Wauwatosa, but the crash was not a result of a police pursuit.