Yeah, I used to listen to Groove Salad a lot, back in the days before my first iDevice. Since then, iTunes (and whatever's on my phone/iPod) have taken over as my primary music supply.
And yep, GS is available in Canada! These days I'm on a somewhat-obscure cell provider (Wind Mobile). Their service is dirt cheap (unlimited talk/data/text, unlimited long distance in Canada, voicemail, etc. for $35/mo), but it comes with the rather unfortunate downside that their service has a lot of dead spots. In the dead spots, my phone fails over onto another carrier's network, but airtime and data are extras at that point, so I have roaming data disabled.
As an aside, my car is only wired for 30-pin Apple devices, so my current Android phone wouldn't work anyway. I have my 2005-vintage iPod providing music in the car. I could rewire the adapter to take a headphone jack input (pull the stereo, change the wire, fiddle with some dip switches), but then I'd have to fiddle with the phone everytime I get in, so .... meh. I can't be bothered.
Thinking about it, I've got a spare Bluetooth audio receiver that plugs into the Apple 30-pin. If my phone can connect to both the BT audio receiver (for music) and the car's built in BT receiver (telephone only) simultaneously, then it'd work without me having to fiddle with cables everytime.