What strikes me about the pictures from spaceflightnow is that they emphasise just how small the Minotaur is compared to liquid-fuelled LVs. You could see one being launched from a V2-style mobile launcher!
Russia's Minuteman counterpart, Topol, does just that. Several were used to orbit payloads under the START program, and those were launched from mobile launchers. It was never clear to me why the U.S. did not develop a similar capability.
In terms of the solid/liquid size comparison, Falcon 1 is probably the best liquid comparison to Minotaur 1.
Falcon 1 stands 21.3 meters, weighs 27.2 tonnes, and can carry 0.47 tonnes to 185 km x 9 deg from Kwajalein.
Minotaur 1 is 19.21 meters tall, weighs 36.2 tonnes, and could boost 0.64 tonnes to 185 km x 28 deg if launched from Cape Canaveral. It's a mighty little "pocket rocket".
- Ed Kyle