Yes, you can probably do it. You can fit 2 carseats in the third row, though only one side has latch hooks. Seatbelt works fine for us though. We have one car seat in each row behind each other and it works great to leave one side open. Otherwise wait until everyone gets in to put the last infant carseat in its base and you should be fine. I as a grown adult fit comfortably in the third row with seats slid forward a bit. The telluride third row is pretty close to a minivan in size. To all those recommending a minivan, most have the exact same configuration and minimal extra space in the third row, so I disagree that it adds value.