How to create Google map route for a moving points

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.NET

Google

1. I want to create a route on a google map. I have multiple point more than 100.
If I want to create map with the point the showing 100 point in same rout but I want only start point and end point for the route.

2. I also want to create a map with live route of a moving car. I have web service and it can return current point. Lat long will be updated periodically(30 sec) and i have to show a car is moving on the route and route will be created accordingly and car icon need to be rotated according the direction of point.

What I have tried:

1. reference http://econym.org.uk/gmap/example_cartrip.htm has been used but problem is it showing multiple points.

2. I have used some code from code project itself(Google Map Control for ASP.net Part 1)