Maui, I am not sure what my traveler bags are (6 or 7") but I can also squeeze 2 in. No problem with the woods. You just have to angle the bags in with the woods leading. I can also fit my normal bag (just 1 at a time). I believe it is a 10" with large pockets, etc. It can be done. Note I seldom have the roof or windows with me when I drive. A good year is when I do not have to assemble the toupee, ever.
Golf bags are easy. Packing for 2 (with one a female) for a multi-week trip is much more of a challenge. Done that and drove uncomfortably all the way with the original side windows shoved behind the driver and passenger seat. Not an open space in the car.