"What was a unique feature of the second Range Rover that was ever produced?"
It had six wheels.
Correct, and is still in use today as an airport fire truck.
It was a convertible.
No, but we do have the Range Rover Evoque Convertible now.
It had a frame made of wood.
Incorrect. That wouldn’t be very rugged.
It was capable of floating.
Incorrect. But it does have a great wading depth.