Very good article in the latest SnowTech on the Rush.  The chassis technology is state-of-the-art.  The progressive rear skid isn't the best part of this sled.........it's in the chassis construction.    
I think we'll be seeing a lot more adhesive in the next 5 years.  My guess is that Yami will be next using it to save weight in the very near future.  The process is also much more efficient and cost effective in the factory which is what really matters to the bean counters for the big 4.
Also a very good article on the e-tec.  Tons of technology there, like riding one very smart computer.  The technology is amazing but long-term durability still needs to be proven.
Anyhow, I see lots of glue and direct injection in the next few years  

From what I read, it's been in aircrafts for a very long time.  Interesting that at 35,000-40,000 feet, the temp is at -40C........winter temps for sleds    Polaris has already claimed a bonus in chassis production.  The chassis goes together and conversely can have parts replaced much easier.  Pretty neat    Hope you guys had a good ride.  Didn't know sled trails still had bumps