2-gig of internal memory with no option for SD or similar memory cards.
This means once your device is full (~60 minutes), you must go dump it into a computer somewhere.
Our local K-mart and Best Buy have
these from Aiptek (LINK)for around $98.
I have not used one, but have considered it as a cheap option. I like cheap, so that if it gets smashed or lost... no big investment loss.
This one uses a 2gig SD card, and records ~80 minutes per gig. With SD cards being cheap, you can just pop in another card and keep head out to your next track session. (Wal Mart has a 2-pack of 2G SD from Kodak for $30) In HQ mode, this one records at 640x480/30fps, and can output the video direct to TV in either NTSC or PAL format (in case you've been running "the ring" and need to show some locals how your mad GT4 skillz helped you execute a particularly difficult turn).
I know there are better cameras out there. But as I mentioned, I'm thinking this is a "good enough and CHEAP" solution.