this was discussed a while back about booster seats for children. Most Rv's do not have four forward facing seats as advised by the transportation board for proper booster seat usage. The recommendation was to take two vehicles . The second vehicle being your car that has proper seat belts and forward facing seats to accommodate safe booster seat usage. I have seen floor plans of four forward facing seats on PPL motorhomes but do not recall brand. You probably have found the ones I have seen already according to your post. I can see where this way of travel would not be desirable for vacation travel but some advantages to. Instead of towing towed you have to drive it ( a Negative) you still have the towed with you and the kids are safe( a positive) . Or just keep shopping till you find what you need.
