Business travel is changing quickly and a lot of that change is being driven by the explosion in the sharing economy. The use of home sharing sites like Airbnb is on the rise. The use of car sharing services like Uber and Lyft is on the rise. Corporate policy is not quite keeping up. The Global Business Travel Association did some great research highlighting the gap in what employees perceived is permitted by their companies' HR or travel teams versus what is actually permitted. Note that only 17% of corporate travel managers actually allow home-sharing in their travel policy.