Ok, this has been driving me nuts all day. It would have been around 1986-7..and I remember playing this vertical shooter in our arcade. I remember that you were flying around on star wars-esque speeder bikes and your bike could be switched or upgraded to new bikes with different weapons...I think anyway. I could be incorrect all the way around, but this seems to stick out in my mind. Any ideas? I spent an hour digging around mame trying to find it...to no avail.
"The only desire the Culture could not satisfy from within itself was one common to both the descendants of its original human stock and the machines [...]: the urge not to feel useless."