What kind of helmet?

[Jim Waldron <jwaldron47@earthlink.net>]

Snip....
>
>Or must an SA- be worn for cars and M- for bikes? 

Snip....
>1. SA standard requires flammability test while the M standard does not; 2. SA 
>standard allows narrower visual 
>field than M standard (Some SA helmets may not be street legal); 3. SA 
>standard has rollbar impact test while
>M standard does not.

So, what do you wear in a mototcycle streamliner?   M because it's a 
motorcycle, or SA because you are inside a roll cage?

Thanks,
Jim W.