The way I read this

Quote:

vehicles with a rigid outer closed structure OR vehicles with both rigid protective structure and seat belts


the M3W falls under the last category "protection structure and seat belts"

I think the "rigid outer closed structure" means no helmet is needed if you're driving this:




2010 Morgan +4
Me racing it: http://youtu.be/CQgT2vMLEUo
2014 M3W Brooklands
To be raced