Mate, you're kidding, right? Your probably picturing a Wrangler from1981, with bad dampers. The 4 door JL Rubicon is easily controlled with one hand, at 95 mph. You can even dart/point and squirt between cars - no problem. Obviously it isn't a Miata, but it's not a Soviet UAZ either. The all-terrain tires are speed rated to 99mph. I'm pretty sure that with all-season highway tires, which most Wranglers are sold with anyways, it can cruise 110 mph, traffic permitting, safely, all day. Fuel economy will be even more non-existent though.
At any rate, he's back, alive and kicking:
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Here's Tech's notes:
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