In the beginning, Peter Lawford reads an ad in the newspaper that lists the phone number Murray Hill 3-8098. He then goes to the phone and dials the number, but the number he dials is not even close to the number in the listing.
The newspaper ad that Charlie Raymond reads misspells the word "countryman."
Charlie states the distance from Salt Lake City Utah to Reno Nevada is 521 miles It is actually 516 miles.
The trip ended in San Francisco, but the cityscape shown is a different city.