On musical grounds alone, the first set went high and low.

Out on the highway, however, a new set of rules has gone into effect.

The last set sold at public auction went for $8 million.

This results in a "clear," and the person who completed the set of four goes next.

"Every set we've put out has gone almost immediately, which is pretty amazing," she said.

The second set of units should go on sale later this year.

The breakdown of how each set went is shown here.

Then another set of lights closer, this time- also went dark.

The first set was close, and went to a tie break.

"I knew in my mind that the third set was going to be a different story," she said.