You do the best you can to make people safe in a motorhome. There is no perfect place to put kids in a MH. The chances of getting in a terminal wreck in a Class A MH is relatively small. IF you have them buckled in the side facing sofa, with pillows perhaps to their left or right, then you have done the best you can do. If you get hit in the rear, if you run into somebody you will be oK. If you run off the edge of the road into a ditch and all H breaks loose I’m not sure anybody is going to come out unscathed. Again, do the best you can and drive like you have kids in the car.