Another continuum of covers.
Above is a Zero-X-MEV-like super sleek craft sporting the cover of Galaxy Science Fiction from August 1966. Looks like a couple of Wookies at the wheel!
Mike Trim, he of Century 21 fame, gave us his own vision of sleekness eight years later in 1974 shown below. A much more industrial design, it reminds me of the realistic mechanics of artists like Foss.
It was my great pleasure to be able to buy a copy of this image personally from Mike at Fanderson's TV21 con way back in 2010.
Here's a pic of slickness itself, the Zero-X MEV from TV21 January 2067
I wonder if the MEV's design ever changed?