Dropping a modern drivetrain into a classic chassis is nothing new. Literally dropping one onto a modern chassis, however, represents a major step up in complexity. What you see below is basically the body of an old BMW 3.0 CS—you know it as the original BMW Batmobile—that's been dropped onto the chassis of a 1998-2003 E39 M5.
Forget every Prius you've ever seen. This is the best kind of hybrid.