When Turk is talking to Jordan, the pacifier in Isabella's mouth appears and reappears several times.
When Keith makes the accidental horn sign and causes a trucker to think, JD mentions a passing truck. This is impossible since, in North America motorists drive on the right side of the road. If a truck was passing the scene would have been on the opposite side. If they meant passing on the same side then Keith should have been looking ahead and not behind the RV.
In some scenes, it's obvious a dummy is behind the wheel of the mobile home instead of Ted.