I have 3 young kids and:
My Britax car seats fits perfectly...
1. While driving in the snow, the Model 3 is THE safest automobile. Drives in snow like BUTTER, better than any 4-Wheel ICE sedan.
2. If we were ever in a accident such as T-Bone, I would know that my kids will be safe.
3. If I needed to pop in to store, knowing my (13 years old was inside) the younger ones and DOG Mode and 70 degree protection... it a Tesla Gift to have a feature.
4. I could Safely warmup or cool down the Model 3 in the garage and NEVER fear carbon monoxide deaths with the kids.
5. When exploring all over USA, having FSD makes me less prone to fatigue and makes me know that I will not put my kids in danger driving tired.
6. When my oldest child is ready to drive in 4+ years, I would know they are driving the smartest and safest car as a hand me down automobile. I would hope the software updates will continue to have Limits that I can add. Currently, I limit the speed, know the location, know the battery level, etc all remotely and know a new teenage kids is safe.
7. When they turn on the internal camera, I “May” be able to see the kids without turning my head... lets hope..
8. IF Tesla Taxi Network, I am hoping...I could send my car to pickup home for my wife to use it for after school pickups. Then send the Model 3 back to my office in the evening.
9. Opps, when My kids drive in the future, they will NOT need to go to any gas stations, charge in the garage daily. They will hardly travel more than 310 miles a day until they finish college. They already know to charge their Kindle Fire tablets daily.
In short, think about your kids safety and growing into the future.