July 27, 2012
If you missed our last Speed of Sound feature, you can find it here.
We asked fans to try and identify the BMW M3 just by the sound of the engine as it rips past.
This weekend we're back with part 2.
Check out the video and then hit comments with your guess.
What car makes this noise at 100+ mph? Bonus props if you can guess how fast it’s going!