Platforms are a big deal in the automotive industry. Often cars are stuck with older platforms that will not allow changes in suspension, drive trains and other important components. One size all is kind of a nirvana accomplishment. Add to that, Volvo is all about making unibody cars for overall strength and integrity and it is a complex endeavor. There is probably significant tooling savings long term as well as commonality in some of the components. It took a lot of engineering talent to make that happen. So yes I am also impressed. Having a common engine also was a Nirvana accomplishment. I know on the XC90 forum there are folks who wanted a V6 or larger engine. But given today's focus on emissions, efficiency, packaging, commonality of components, and the expense of having separate engines necessitates this direction. Audi has the VW group to borrow engines from. People think incorrectly that 4 bangers don't have Mojo, but they would be mistaken. Racing has been using 4 bangers for many years.