I've got Schuberth flip up C3 helmets with bluetooth intercom form my bikers time.
Do I need special car racing helmets or will the bike version to the trick? Most likely there is more air ventilation on the MTW than on my Honda GoldWing.
I have Arai jet helmets too but without integrated eye protection and sunshield.

Pilot goggles are available...


Hannes
once: Green M3W; 2013
now: Red 4/4 Sport; 2011
and some practical cars for use in real life