Still think it should have been "No Two Vehicles (or Cars) The Same"

Here's an OZ one. "Summer-time is Touring Time. Try out A Rugby Tourer"

Feb 24 1923 ad ... Built By Durant
Durant "Just a Real Good Car"
Star "Worth the Money"
Flint " In Honor of Mr. Durant's Home Town"
Princeton "A Surprise"
Locomobile "An Excellent Car for Exclusive People"
Mason Roadking " Speed and Power and Dependability"

Feb 6 1924 ad
Locomobile "The Best Built Car in America"
Flint six "The Finest Six-Cylinder Car"

Mar 18 1926 ad "Low-cost Transportation .. Star Cars"

April 17 1929 "Devoted to Quality" The Durant 40 "Thoughtfully Improved"

June 10 1927 New Star 4 / 6's ad .. "The Aristocrat of the Low Price Field"

Must be lots of various slogans put on Billy's empire of vehicles and offshoots 1921 - 1934.

Where Are You From? Ottawa Ontario

Do You own a car built by Durant? Dominion built 1932 614 sedan

Just caught another one on a Model 55 Silver Anniversary brochure on eBay
"By This sign (rad and grill in center) Shall Ye Know it"

Where Are You From? Ottawa Ontario

Do You own a car built by Durant? Dominion built 1932 614 sedan

Not exactly slogans, but ad headlines:

Star
1924
Low-Cost Transportation for Everyone
It's a Star in Quality
THE CAR WITH A BACKBONE
For Your All-Weather Car Get a Sedan STAR

1925
More Power - More Room
Twenty Percent More Power from The Million Dollar Motor

1926
Gaining the Respect of the Nation
More Power And Superior Quality
Clean-Cut, Swift, and Sure

Where Are You From? Grand Junction, CO

Do You own a car built by Durant? 1926 Star Coupe, 1929 Durant 663, 1929 Durant 666