Cart Paths

Between the flippers are 6 lights, which indicate the next Cart Path award. Cart Path awards are given when you shoot an orbit after lighting it from the right inlane (for the left orbit) or the left left inlane (for the right orbit). The awards are:

Bonus 2x
Increase Cart Path
Bonus 3x
Increase Cart path
Bonus 4x
Bonus 5x + Light extra ball

The flashing award indicates what you'll get next. The awards reset at the start of every ball. It doesn't look like you get anything extra after you get 5x + light extra ball. You only get one Cart Path award per inlane trigger. You can only get the extra ball from Cart Paths once.

Orbits score 50K+50K for each consecutive shot. I believe getting "Increase Cart Path" bumps up the base value by 50K (i.e. 100K+50K/shot and 150K+50K/ shot). That resets each ball as well.

Each orbit has a big white circle light that flashes when it's lit for the next Cart Path award or for consecutive loop awards.