I wanted to build a single page app using handlebars in a model view controller pattern.
Viola, here it is http://tollcalculate2-env.eba-zgwpj7xn.ap-southeast-2.elasticbeanstalk.com/
Its hosted on AWS and makes use of tollAPIv2 and google maps api to get polyline (think route) and draw gantries on a map. Next step would probably be to either make it more mobile friendly (mobile UI is atrocious) or porting it to react. I haven’t decided on that yet.
Thank you to Service NSW project team (special shout out to all engineers for this API 
).