@matete_ I peeped the comments and it's a battle between the "Oxford comma" - number 2 - and AP style what-what which is number 3, so... ๐คท๐ฝโโ๏ธ
A truck loaded with thousands of copies of Roget's Thesaurus spilled its load leaving New York
Witnesses were stunned, startled, aghast, stupefied, confused, shocked, rattled, paralyzed, dazed, bewildered, surprised, dumbfounded, flabbergasted, confounded, astonished, and numbed.