Drive Time: Round Trip

I would like to see this feature added:

• Drive Time: Round Trip

I am glad Drive Time is implemented, this is incredibly helpful! However, the system doesn't allow me to take into consideration a round trip drive time back to the starting location. (A solution is to put a drive time on the next event, however I find it appropriate to tie the return to the original event)

This could be as simple as adding a "Round Trip" check box on the "Alert, Repeat, or Travel Time" option area: