Being able to drive fast in the turns is more driver skill than the vehicle. At normal road speeds, most modern cars will corner just fine, if driven well.
Being that I spend plenty of time on backroads, and typically drive reasonably quickly on them (to minimize having to gas the Jeep up short hills, etc), I get plenty of practice in making it handle well on them. I laugh when I get stuck behind the slow guy in a BMW or other sports car, or when they're behind me and I'm pulling away. Especially when they slam the brakes and crawl around a corner that I take at 30 in a total brick on wheels, knowing that I wasted less gas on the corner than they did
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Call me crazy, but I actually try for mpg with this Jeep:
Typical driving: Back in Rochester for school, driving is 60 - 70% city