Welllll,
She COULD have them go another route like,
"Hey, turn here! I think there's a sale at Macy's...."
ROFL
Actually, had Logan one functioning brain cell and even less marginal competence, he would have told Suvorov of the plot and let some substitute -- cannon fodder, unfortunately -- troops take their assorted places in the motorcade.
Ah, well, suspension of disbelief that a President can be so effing incompetent and self-serving. Sigh.