They always shows as arcs on the map, as we can't know what route you'll take. At least thats the rationale.
I completely understand - and anticipated - the rationale.
Everything below this line is just throwing ideas around.
I understand the rationale but it doesn't look good.
Compared to the train trips which I have to say look absolutely fantastic.
However, obviously there is certainty there because trains follow fixed routes - I believe they're called "tracks".
I also understand that it would be ridiculous for Tripwaffle to try to duplicate a GPS app.
Let google maps and all the other maps apps do their thing, and you do yours.
Further, according to my cursory research it is impossible to directly export a route from google maps.
However I have identified two possible work-arounds.
One would be to share a route. However that would probably require too much interaction between Tripwaffle and google maps.
The other would be to allow users to send in a GPX file. Tripwaffle would still need to parse it but that wouldn't be interactive.
Enough of me thinking out loud.
Back to job hunting!