The Jeep Wrangler is something like a Harley-Davidson. It's an anachronism, and should probably be a dinosaur, but no, it's still popular because it fills a need like no other vehicle. Despite its inherent design limitations (we won't call them flaws), primarily balance and storage, the Wrangler delivers inimitable fun. Challengers have not been able to steal from the allure of the Jeep. The dynasty lives on.
Jeep engineers have kept the momentum rolling by making timely improvements. Model year 2007 brings an all-new Jeep Wrangler that (no surprise) looks just like the old Jeep, whatever "old" Jeep you might be talking about. Can you name one vehicle (besides the Harley) that has changed its looks less, in 60 years?
In 2007, Jeep introduces its first four-door, using the name Unlimited from last year's stretched two-door. You might wonder what took them so long. It's a perfect fit for the times. It doesn't change or pervert the character of Wrangler at all, it just makes the vehicle more attainable, and more desirable for many. It's much more comfortable and convenient, and holds way more stuff, including happy passengers.