Could you live with something that looked like a Toyota Matrix/Pontiac Vibe? If so, go look at a Mazda5. They're a slightly stretched 3 platform and have 6 seats. They don't drive like any minivan or SUV, they're more like a slightly-tall 3.
If that won't work for you I'd suggest sticking with a Ford 500 or a similar-size car from someone else. We looked at the 500, a used Chrysler 300M (I can't stand the new 300), a SAAB 9-5 wagon (not nearly wide enough), a Buick LaCrosse (wife didn't like it), and a bunch of others. We never got in a new Charger, but it might be wide enough.
We settled on the Mazda5 because it didn't feel or seem like a SUV or a minivan and the price is very right.