Honda is schedualed to begin racing with more evironmentally friendly "green" cars. They hope to clean up the dirty image that racing has built up among the ecomentalists.
Actually, thinking about it in a different way I agree with not wanting one in a rollover incident. As an inpact with a wall or whatnot I'd be wanting it, but if it's going in the air then yeah I'll pass. That said, I'd think a 70mph cart would have a rollbar?