Confess in LA traffic?

It's probably a joke art piece, but maybe not. From we-make-money-not-art.com:

Mobile experiences: The scenario of the Mobile Confessional is as follows: When you see the vehicle (called projectCAR) while stuck in traffic, you can call in to hear the message: 'Welcome to the Mobile Confessional. Our service provides callers a safe and anonymous place to confess their sins to the world while commuting in Los Angeles. Your confession and an appropriate penance will be scrolled across the electronic sign in the back of the mobile confessional vehicle. Please, take a moment to share your sins with the world, so that all may forgive you.'"