Just beating a dead horse a bit more, but you could take this already established role (on construction sites) http://en.wikipedia.org/wiki/Banksman and extend it to being responsible for the vehicle whilst in an urban environment.
@Dammit started
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Just beating a dead horse a bit more, but you could take this already established role (on construction sites) http://en.wikipedia.org/wiki/Banksman and extend it to being responsible for the vehicle whilst in an urban environment.