Android Controlled Wifi Car with camera...

I'm very new to Arduino (Like a week :cold_sweat: )

I want to make this spy car which can be controlled over wifi... My plan was to have a blueooth shield and then use an android app to send letter to the arduino board which then power some motors.

http://www.instructables.com/id/How-to-build-an-Arduino-WiFi-4x4-with-Android-Cont/ this is similar to what want.... but it seems really complicated.... (excuse my stupidity)

Does wifi work the same way? Also will a Uno be adequate for this project? And which wifi shield? Will I be able to use the Android hotspot to connect to the car?

I would be very grateful if someone could spare the time to help me a bit..... thanks in advance.....