I'm from (and live during summer break) in the Twin Cities and end up flying out of MSP most of the time (MSN doesn't really have a huge selection-at least for NW). I for one really like British/Australian accents, maybe it's a Minnesotan thing?

My theory for the voice is that the company that built the tram was trying to get back at MSP. They lost a lot of $ in penalties because of how late the tram was ready (it was REALLY LATE). They figured hey-lets give the TC'ians a foreign voice-that'll confuse 'em!