Great info!

My buddy had a car delivered from Utah. It was dropped off in a shopping center parking lot. As they were unloading it a cop show up and starts asking about the car. "Are you going to drive it? Do you have tags?" Fortunately, my buddy already had the title and got tags from DMV. The cops stays until he mounts the tags on the car and drives off. I suppose he still could have received a ticket because it wasn't inspected and didn't have a registration yet.

So, make sure you get perm or temp tags and DON'T use plates off another car!