Loud and fast are 2 descriptive words I'd use to describe this insane AMG. What words come to mind when you view this beast? Start the video at the 1 minute mark to view it in action.

Here are the build specs:

2010 Mercedes-Benz C63 AMG
M156 V8 6.2L engine
ARP head studs
Weistec Stage 3 supercharger system @ 13psi
IAH 2in primary headers, custom intake pipes
Stock fuel pumps, injectors and lines
Rebuilt transmission
Power: 513kW / 688hp @ wheels
Tuned by International Auto Haus
690hp