Doesn the cockpit need a role cage according to the rules?
Several of the previous unlimited class LSR vehicles (Blue Flame, Budweiser Rocket Car, ThrustSSC, etc.) did not have, nor are any of them required by any “rules” for setting the LSR, roll cages in the cockpit since they are not part of the slower classes (400mph and lower) which do require them. The FIA merely specifies the rules which qualify for a record setting event to be legitimate for the record books and roll cages are not one of them.