I've heard of attack bikes but this is just overkill.

What's the caliber on that cannon, where's the breech, and how the heck does it not rip itself off its mountings and destroy them both when fired?

The artist drew this artwork about 21 years ago.

ThunderBird said:
What's the caliber on that cannon, where's the breech, and how the heck does it not rip itself off its mountings and destroy them both when fired?

It's a recoilless gun (google it). Yes, it has NO recoil and can be mounted AND fired from ANY vehicle that can carry it. They have been mounted on motorcycle sidecars in the real world too, so the drawing isn't necessarily pure fantasy.

Astrojensen said:
It's a recoilless gun (google it). Yes, it has NO recoil and can be mounted AND fired from ANY vehicle that can carry it. They have been mounted on motorcycle sidecars in the real world too, so the drawing isn't necessarily pure fantasy.

I know what I recoilless gun is, though I didn't recognize this as one.