I just read about this HD camera called the GoBandit.
It is similar to the GoPro HD but features an integrated GPS. It overlays speed, location, and altitude over the 720p video.

TECHNICAL SPECIFICATIONS

VIDEO PERFORMANCE
High Definition 720P (1280x720 Pixels) @ 30 fps
Standard Definition (640x480 Pixels) @ 30 fps

PHOTO PERFORMANCE
5 Megapixel, automatically at 2 or 5 second intervals

VIDEO SENSOR
5 Megapixel CMOS image sensor 1/2.5''

CAMERA OPTICS
Fixed Focus glass lens rotatable 135 Angle of view

GPS
20 channel low power SirfStar III GPS receiver

GPS ACCURACY
Speed: +/- 0.3km/h
Altitude: +/- 15m

MEMORY
2GB included
Removable SD, SDHC compatible

BATTERY
Removable Lithium-ion Battery 3.7V, 1200mA
Recording: up to 2hs (720P recording)
Charging via USB
Charge time: 4hs (average)

DIMENSIONS
105 x 62 x 34mm (NEED INCHES SPEC)

WEIGHT
145g (NEED POUNDS SPEC)

WATERPROOF
IPX7 (immersed 1m under water for 30 minutes)

SOFTWARE
MAC/WIN gobandit wizard to cut video, apply skins and share video

BOX CONTENT
gobandit GPSHD action camcorder, 2GB memory, helmet/flat-surface mount, rechargable Battery, USB-cable

The only drawback is the severe price increase over the GoPro, it's available for preorder for $470 but is expected to decrease to $389 when it comes to the States.