Hi, there is no RhoMobile / RhoElements API for that. In order to achieve that functionality you'd have to write your own native extension, http://docs.rhomobile.com/rhodes/extensions#rhodes-extensions
As a workaround You can also try and call the native Navigator for the same.
It will open google navigator with starting point as your current position and it will direct you to 42.455648,-71.065113
Hope this will help you.