Google Directions API (multiple directions)

1. You need a Select box with multiple selection for Starting Points
2. You need a Select box with multiple selection for Pickup Points
3. You need a Select box with multiple selection for Destination Points

Which means you need all possible path combinations for these 3 select boxes and choose one path from it.
This sounds interesting to play with. I will have to create algorithm to generate the all possible combinations of routes.

Output is a 2 dimensional matrix showing starting points, pickup points and then the final destination.