Hi Lucille,
Just a couple of questions
How old (and heavy) are the passengers?
Would this 'strong wooden panel' cope with a sustained kicking from a couple of the local farm lads? Motorhomes are mostly built from cheese and string
and the forces involved in a serious crash would tear it apart.
It is easy to fit lap belts securely, with connection to the chassis. If your passengers can use child seats, there isn't a problem. Three-point belts require rather more thought, but it isn't impossible.
I have plans
