I offer consolation here. I've considered making a change to a Vulcan myself since moving to Modesto. All of the roads with-in 1/2 hour or so are straight and flat. When I lived in Roseville, I had access to a number of twisty roads and could make it to Reno or Lake Tahoe in under 2 Hours. I just went to Reno this weekend and it took almost 4 hrs of straight freeway to get there that fast. This town is much better suited to a cruiser than a sport/sport touring bike like the FZ6.
Which model of Vulcan did you get?
My two favorites are the Vulcan Mean Streak 1600 and the Vulcan 900 Custom. I've owned two Mean Streaks and they're great bikes with the exception of no ground clearance for cornering, and a really crappy seat for passengers. The 900 Custom offers better ergos for a passenger, but at a sacrifice of power due to the 900cc power plant.
Anyway, good luck with your new ride.