Google Patent

Please take a look at the Google patent application named "Transportation Routing". Its number is US20060149461, available @ http://www.arnoldit.com/lists/google-patents/pat20060149461.pdf

Note the drawing and what is being claimed, not just cars, buses, and trucks: in principle routing of satellites and spaceships. The transportation routing system was done casually. It's an example of how Google can innovate in some very surprising ways that can't be predicted

Google's approach to research and development relies more heavily on mathematicians rather than on software programmers with computer science backgrounds, although the latter still make important contributions to the search engine company's work.