Long day at work? Rock Band in a truck. Pre-wedding jitters? Rock Band in a truck. Hanging out in a big open field before a Phish concert? Rock Band in a truck + grilled cheese sandwiches.

Want to get people to your CES booth? Rock Band in a truck. That’s what audio gear company Maxxsonics had going on with this gigantic rig outfitted with multiple speakers, LCD monitors, and flashing lights that seemed to scream, “You there! Attention! We’re playing Rock Band!”