In 2008, the original Trekker model that Zur’s father rode was able to change wheels in 40 to 50 seconds. Today’s model “does the same in about four seconds,” Zur says, and includes specially designed ropes to make pulling more comfortable for the helpers. Typically, three to four people need to be on hand to push or pull the trekker on the trail. Paratrek is one of the only companies in the world building hiking wheelchairs, but the company earns revenue in three different ways – selling the Trekkers, teaching workshops, and organizing hikes. Full article:
https://israeltrade.org.au/2022/05/11/israels-paratrek-designed-a-wheelchair-to-make-hiking-accessible-for-all/