The hope is that intrepid enthusiasts can hack together mods ranging from breathalyzers to a stirring or shaking mechanism.

ENGADGET

Those require a driver to breathe into a tube, much like the breathalyzers police ask suspected drunken drivers to use.

WSJ: U.S. Board Urges 0.05 Drunk-Driving Threshold

Perhaps the cameras had breathalyzers because it was obvious the vast majority could get arrested if they used their car keys that night.

FORBES: College Professionals at Cowboys Stadium? Alabama vs. Michigan