Lol @ tonk, Brian, Craig.
Triple post within minutes, all correct.
Now that you are warmed up, here is a real challenge.
http://www.youtube.com/watch?v=izrNv4nMxAg
Think it's possible? Without CGI that is.
Vitals
Mercedes SLS AMG
420 kW/571 hp peak output, 650 Nm of torque
1620 kg
0 to 100 km/h in 3.8 seconds and has a top speed of 317 km/h
Tunnel appears approx. 30 feet in circumference, length is tough to determine.
Downdraft, centrifugal forces...
Possible? Get the scientific calculators out...