This is what my day was like
This is real data from my GPS logger, it's not just a path that I've drawn.
Here's the KMZ
I haven't got the altitude data out, but I'll work on it. Unfortunately, the logger was not set to record altitude (it's a configuration option).
More info to come in this posting in a few days, once I'm say, not at the end of 16 hours of travel or whatever.
UPDATE 2007-06-25: I used the DG-100 GPS logger (SIRFstar III). I turned it on when boarding the planes, I had window seats. I just had it on my leg (which was not so clever, as it fell off onto the floor twice). In the seat pocket would probably also work. That's it, it acquired signal normally and maintained it without any problems. The above track has some gap-fill artificial data over Newfoundland as the battery ran low and I had to recharge the DG-100 from my laptop for an hour or so. While recharging the Air Canada staff asked what it was and when I told them it was a GPS, they checked and verified that it was ok.
In case it's not clear, it's not live data captured directly within Google Earth. That should in theory be possible, although without a net connection you would need to pre-visit places to get them in Google Earth cache I think. The above track was stored on the logger and then converted for Google Earth using GPS Visualizer.
The DG-100 is not a Bluetooth logger; it's self-contained (for Bluetooth, check the airline policies, and you almost certainly can't turn it on until the seatbelt light is off). I'm pretty sure SAS permits Bluetooth; I don't know about other airlines.
There are two separate flights in the track: first BA from Paris to London, and then changed planes to AirCan from London to Ottawa.