So I checked THREE separate videos that were distinct and individual. The third one actually had a handy digital timer built in. I utilised 0-250km/h as a control which we can compare to below instrumented times for verification.
Video 1
0-250km/h= 23 seconds
0-300km/h= 42 seconds
Video 2
0-250km/h= 24 seconds
0-300km/h= 42 seconds
Video 3 plus digital timers
0-250km/h= 22.8 seconds
0-300km/h= 41.3 seconds
As you can see from atleast 2 seperate tests below the control 0-250km/h are actually quicker!
So taking all the evidence into account the Alfa Romeo Quadrifolio has a SEXY METRIC for 0-300km/h of 41 seconds flat.
Now that's QUICK! Oo
(Oh and as for the Autobild 0-280km/h result, I can't speak for it. Three separate tests show similiar results. So I'm aware of it but don't account for it.)