Jimbo 
2005 BMW Z4 Convertible 3.0i 2dr Roadster (3.0L 6cyl 6M)
What is missing?
 I've owned a number of sports cars including two Miatas and an RX-8.  This is my first BMW since my '88 535is and it doesn't disappoint.  It's performance is on par with more expensive cars, e.g., Boxster, but it is far less problematic and easier to live with in daily driving. It is comfortable, well-made, has a decent trunk and will run with like cars when asked to do so.