If You Are Promoting Limousines Which Search Term Would Return The Best Results In Search Engines?

new york limo, just a guess

Personally, I have ran several campaigns for limo companies and depending on if you want to target corporate limo service or special events they keywords to use differ.
Based on the keywords you are asking about I would stick to the Geo targeted keywords that contain new york etc. You can also target you ad to appear only in the five boros based on adwords and yahoo's advertising platform.
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"Limousine services"
That is what they are mainly in the yellow pages under also yahoo search
Good luck!! I am sure you will do an outstanding job!!

Even though you are requesting us to choose a particular set of keywords whenever we submit a search query on major search engines, your current opening webpage lacks certain metatag entries which will trigger these search queries. For example: