Check out hi-resolution aerials of Cavite on google maps. As far as I can tell, only northern Cavite (south Manila Bay shore) and the Clark and Pampanga area seem to have images at this resolution.
The Cavite image i linked to above clearly shows the interchange at the end of Coastal Road - and you can see how bad the traffic is. Zooming up to a higher altitude, you can see the extent of the spread of the urbanized areas in the national capital region.
I hope more data becomes available, and that google puts this up on google maps. The more we understand our spatial environment, the more we can better plan our growth.