Is there a standard for breaking theme that the community here holds to? I'm asking a serious question because the motorized Omnibus didn't debut until 1923 yet travels down Victorian Turn-of-the-Century Main Street every few minutes. How does a fandom decide what is (in)tolerable when it comes theme?
A horse drawn omnibus would have been in theme. Does the motorized Omnibus (and other features) get a "pass" because it looks the part? How is the interior of a coffee house that must be entered to be encountered worse than an out of place vehicle?