This is a very good topic that I think can be the next big thing in Business Travel, however it will take an army of evangelists.

In my previous life as head of business travel products with an undisclosed employer :-) I had this in my roadmap since 2003. I used to discuss all my ideas with corporate travel managers and their reaction to this one was: silence. I could have told them to dress in black to reduce cleaning expenses - same reaction. Two issues here: first, they had hugely more important basic issues to solve, such as convincing their employees to use booking tools rather than calling the agency (and spending 50-80 $ fees for the service). Second, they are mostly used to seeing things that can be measured in monetary terms (like spending 10$ instead of 80$). Now 5 years later technology has improved and mindsets have changed, so it's worth a new try. Guys - if you want any ideas let's open a discussion somewhere.

(Claude you think I have moved on to leisure travel now: yes, you are right, but I still believe in Big Things when I can smell them).