Re: Use rear-facing seats.
The problem is more along the lines of 76 year old folks - even those in reasonable health - more often than not being made out of tissue paper wrapped around soap bubbles. Realistically, getting a single step out of bed is "hazardous" for them - there's no way around that. Arguably, you can try to tote them around in a Zorb ball and hope for the best, or you can accept that they're permanently at high risk of injury and there's absolutely nothing you can do to the rest of the world to change that.