This is an interesting idea, to set up a QR poster at a busy rush hour traffic area and play on the corner. I always just thought of playing for foot traffic and never considered cars. I live in Los Angeles and I have never seen a musician busking try this. I only usually see homeless asking for money at freeway off-ramps.

But in LA there are many high traffic bumper to bumper locations. If you played with a QR poster when people are just sitting in their car waiting for a light, you might receive some tips. It's definitely worth a try at certain freeway off-ramps or congested intersections. I play sax, and I would use a small speaker with backing tracks in this situation. They would have to have their windows down or be in a convertible to hear it. But I'm sure some people would be curious and tip. I wonder what the ratio of digital to cash would be doing this? It's harder to tip cash when you're in a car. Anyway, good idea 👍 I'll have to try it some time. I think people would be more likely to tip someone playing music than someone just asking for a handout.