It's true that that big ol' ambo box is a solid, safer cage. I just wouldn't be able to sit back there and watching the world go by on a TV... That would be rough to make a kid do. Though these days they'd prob. just rather watch a show on that TV...
So, long story short, there are NO child seats that are rated for a rear facing jump seat. Same goes for side-facing seats. So, that rules out all the seating in the back of an ambo... I have seen some newer ones w/ a child seat built into the attendants seat. It's still rear-facing, but maybe a "best you can do" kind of scenario.
I thought I was fine to use it a car seat in my old ambo, but I did some research and found out that no US car seats are rated for buckling into rear-facing seats or side-facing seats. Thus it's illegal in some states to install a seat against the manufacturers recommendations. The only solution is then to put the car seat in the front seat, but then you need to turn off the airbags. On the old E350s, if you turn off/disconnect one, both stop working. PITA not having the newer airbag-off switch.
For example, California regulations which seem like the best guidance for ideal usage:
https://www.dmv.ca.gov/portal/dmv/detail/pubs/hdbk/seatbelts
Child Restraint System and Safety Seats
Your child must be secured by either a federally-approved child passenger restraint system or a safety belt depending on their height and age.
- Children under 2 years old must be secured in a rear-facing child passenger restraint system unless the child is 40 pounds or more, or 3 feet 4 inches or taller.
- Children under 8 years old must be properly secured in a federally- approved child passenger restraint system.
- Children under 8 years old may ride in the front seat of a vehicle in a federally-approved child passenger restraint system under the following instances:
- There is no rear seat.
- The rear seats are side-facing jump seats.
- The rear seats are rear-facing seats.
- The child passenger restraint system cannot be installed properly in the rear seat.
- A child may not ride in the front seat of an airbag equipped vehicle if they are in a rear-facing child passenger restraint system.
- Children who are 8 years old or older OR who have reached at least 4 feet 9 inches in height may use a properly secured safety belt meeting federal standards.
Not to start a debate on car seats, just a heads up, be safe & all that. I had no idea the seats weren't rated for side or rear-facing. I picked up some nice Ford Transit seats w/ integrated seatbelts and was planning on removing the attendant seat and bolting the double seat into an L-track system on the floor of the ambo. Then I could flip it around when in "camp" mode.
We also wanted a little more room, so sold the ambo and picked up a Chinook. Agreed it's not as sturdy as the ambo cage, but way more roomier.
I think the safest thing is maybe a modern, full-size crew cab pickup with a camper shell on the back. Most RV safety people recommend no kids in the RV, and to transport them in an additional car for safety. Obviously not the best solution, but there's probably something in-between that's a good compromise.