in my opinion, some of the most manlyest cars i think would be hotrods, like the american graffiti duece coupe, ect and soem of the muscle cars like the 70' chevelle SS 454 / buick gsx or newer cars like dually trucks, and a future manly car the new dodge challenger Smile
i agree with the 70 Chevelle 454 SS. my father in law has a mint one and its definitely a mean manly car.
another vote for the chevelle, you do not get much more bad a$$ than that. i also think any car with 500 or more cubic inches is manly too.