[dtengineering]

The driver could, presumably, wear a headset with a stabilized camera focused on a phone or tablet of a team member in the stands. The tablet could display an image of the sound waves it is picking up, and the headset could decipher those images to recreate sounds to pipe into the driver's ears.

Now technically that is wireless communication, but it is a sufficiently cool hack that it might just be allowed.

It might also be possible to use a parabolic mic and amplifier pointed at a team member in the spectator area. Once could argue that it isn't a method of wireless communication, but merely one of selective amplification of existing data channels.

And then smile graciously and take the system back to the pit when asked to do so.

Jason