What is the fine-grained topic of the following text: Like its predecessor, the Evo WA is equipped with the innovative rear "XTension" technology which allows you to open the sides of the hull at the rear hydraulically in less than 30 seconds by simply tapping on a touch screen, thus transforming the rear into a 25 m² terrace. Only return the topic.
"XTension" technology in Evo WA