In the opening scene, while following the armored car, the Texas escort car has small hubcaps, when they are changing the flat tire it has full hubcaps, heading down the road after changing the flat tire it again has the smaller hubcaps.
No sound when Banacek lights his cigar.
When Banacek first goes to the site of the armored truck disappearance he walks besides the tire tracks leading to the cliff. After sixty plus days the wind would have wiped away the tire tracks.