When the delivery man switches to the front gas tank of the blown-up van, his hand and sleeve appears scorched by the flames. But when he yells out the door of the van waving the package, he isn't scorched at all, and then he shows up in Memphis burned all over.
The delivery man ignites the gasoline from his truck by throwing a lit cigarette into it. A cigarette does not burn hot enough to ignite liquid gasoline.
There should be no leaves on the trees in Tennessee in February.
When Wyatt and Ivy crash through the roadblock, a piece of it (obviously styrofoam) bounces off Wyatt's head without causing damage.
After Ivy crashes through the road block and Wyatt is hanging from the car, behind Wyatt in the close-ups, you can see the green-screen in the background.
After the two get arrested they are supposed to be in Iowa, however when they leave the jail there is clearly a sign behind them that says Hastings, MN.
When supposedly driving through the Twin Cities, Minnesota, the freeway signs clearly indicate Interstate 65, not Interstate 35. I-65 ends in Gary, Indiana, some 450 miles away.
Trips doesn't tell Ivy that he and Kimberly are celibate until they're halfway to Des Moines, yet she seems to know this when she's helping him compose his Dear Jane letter.