I haven't seen anyone talk about this yet. So if you were to either shoot the race track with some of the default HL2 guns, or if you were to kick the race track with the BSmod swep, an ominous sound will start playing. Sometimes it will just linger around the area where it first started from, and other times it will directly follow the player and start coming from different areas of the map. At first i thought it was an easter egg, but now i *assume* it is just an oddity coming from the game itself. Has anyone else experienced this strange phenomenon while playing?