L293D motor shield power sources

Hi, just browsing information on this as I am a noob on this stuff.

Can I use this motor shield with Bluetooth?

I have pretty much the same kit and set-up with L293D and the ultrasonic, but I also want to make an app for it to use Bluetooth, (power on/off, ultrasonic off (driver mode)) etc.

As far as I know the Bluetooth needs Tx and Rx, can I get to these with the shield in place?

Or is there another solution using the analog pins?

Cheers much if anyone can help,

Alanthas.