Here's the thing. They're directly over the rear tire/wheel/axle so in a side collision they're going to be in good shape. In a front collision, they're in about the same position as most other vehicles. The only worry I have is in a rear collision, but there's still a bumper/tailgate/rear tire etc there, and especially in a car seat he'd be pushed forward and wouldn't suffer a direct blow unless the person behind you was in a truck and completely not paying attention and hit the back of the Jeep at a very high rate of speed. Even then, I'd rather him be in a Jeep than most compact cars. I feel he's very safe back there, he loves the ride. I also take my doors off in the summer and don't worry much about it. I don't see the front door offering much protection to him in the back. Also, since I took the above pic I purchased a new rear seat with headrests. I HIGHLY reccommend it for anyone who rides a back seat passenger who's head is higher than the back of the seat. Best money I've spent on the Jeep, IMO. Let me see if I can find a pic.
When my time comes, mix my ashes with gunpowder encased in brass, point me towards murderer's and pedophile's and let me fly.
(: ¡ ɹǝʌo ǝɯ 11oɹ ...sıɥʇ pɐǝɹ uɐɔ noʎ ɟı