Arduino-Arduino communication and blutooth HC-05 to Android

I have an arduino uno and an arduino nano. I am making a RC car, for which I am using HC-05 bluetooth module and SR-04 ultrasonic sensor. I am also using an Adafruit motor shield v1, as motor shield. Can the two arduinos work using I2C, and also send information to an Android device via bluetooth?

A practical way to do that would be to have one Arduino connected to Android but it can pass on data from the other.

sigh - Nick knows why ! :D

FYI, there are free Bluetooth Terminal apps which you can then use to control the car by sending 'w,s,a,d' - or even one great app that has rigged it up so that the phone accelerometers can act like a joystick.