When Deadshot is trying to catch up with the van that kidnapped Killer Frost, they are driving down the highway next to each other and the "Vanabago" has a roof vent but the van does not, yet the next scene has Silver Banshee popping open an exterior popped up vent which miraculously appears and uses her wailing power to make the "Vanabago" go off-road and make Deadshot crash.
When everyone leaves the strip club in Branson, Missouri, numerous buildings have the label "CASINO" over their doors. Branson famously doesn't allow casinos within the city limits.
The coordinates given by Scandal Savage are incorrect. She gives the latitude as 32.1 N and the longitude as -112 E. notation in lat and long is + for north and east, and - for south and west. Also if it is 112 E that puts it in the middle of China, I'm pretty sure they didn't get there in one day by driving that bus. If it is 112 W, which seems more likely, it is in the Sonoran desert of New Mexico.
It is never explained how Thawne crossed over into the New 52 timeline Barry created at the end of La Ligue des Justiciers - Le paradoxe Flashpoint (2013). Thawne was incapacitated on the ground when Barry began running from the explosion caused by Captain Atom. Additionally, Barry was the only one capable of crossing over since it was his actions that created the New 52 timeline and it would therefore be impossible for Thawne to follow him.