Quote Originally Posted by bloowolf View Post
After watching the video again, a question comes to mind. We all want to follow the speed limit but, what if the speedometers of our cars are not really accurate? If the instrument we all trust to give us an accurate reading is defective, should we be blaming those guys?
All factory speedometers read between 5-10% faster than your actual speed.

This is specifically to prevent people from overspeeding, and to prevent lawsuits from people getting speeding tickets who will try to put the blame on a defective speedometer.

Very few cars have a speedometer that is properly calibrated. They used to do it for police cars in the US. Not sure if they still do.

The only time a speedometer will read too slow is if you have much bigger tires on than the factory tires.

Quote Originally Posted by maki mi View Post
A little bit OT mga boss, ano ang magandang android app para ma check ang speed via gps. Wala akong on board gps eh
I use Ulysses. Terrific interface, great display... easy to set up.

Do note that Android apps are limited by your phone's on-board GPS, which only updates once a second... but that's enough if you only want to know your average speed.