The other bit is the law about kidds, i think even if your vehicle does not have them as standard, mine does not 4 the middle seat, a child under 12 or under x inches tall must be restrained so cannot ride ina vehicle without belts or some restraint. so i can put a 13 year old in the middle seat but not her 9 year old sister.
My PERSONAL view would be not to fit them so you have the option, but set up some syetem so a restraint can be used should you choose. I actually considered not buying my sIIa because the pre 65 allows me to choose if i use a belt.
Some will flame me with 'be safe and use 1', and i do sometimes, i guess my view is that it should be MY chioce, although i guess my passangerf should have the chioce 2 and under x age i agree sprogs should be forced to use 1 whatever the driver thinks.
But then i hate the motorcycle helmet law2.