Lightest in its class,
atmospheric/non-aspirated V10 engine,
best power-to-weight,
best tranny (7-speed sequential)
Viscous differential and as usual the sportiest chasis/suspension setup of the class...
Amazing! this is going to be even a bigger hit than the previous M5 and the absolute refference in the "sport"sedan class this time around.

The looks... well, the 5-series does look better in person than in pics (unlike the 6-series ) but its still not its strongest asset, though the rear shot looks really menacing, and the wheels are spectacular.