Compatibility between Shields

Hi, Iḿ trying to develop a GPS logger, plugged in a car, the data from the car should be recorder in a data base, i research a little, and I found that I need Wifi Shield and a GPS shield, but my question is: are those shields compatible?

Im using an arduino UNO.

I hope you can solve me my question, thanks

are those shields compatible?

Which exact shields?

im new in the arduino world, i actualy dont know wich shields im gonna use, i was hopping that someone can tell me which ones are compatible

This site may help: http://shieldlist.org/