[Jeff in Kentucky]

The Honda Goldwing airbag is designed and crash tested for the typical frontal crash at an intersection, at about 35 mph or less. At higher speeds, you will still fly over the handlebars, but a little slower and with less damages likely from hitting the handlebars and hitting any windshield before going over the front of the motorcycle:

http://www.youtube.com/watch?v=0kWu8mvXDaE&feature=related

Here is some more crash testing, at a slightly higher speed with and without the airbag (talking in a northern European language):

http://www.youtube.com/watch?v=NdEPp38xMGE&NR=1