Here's a sketch of Bumblebee.

They wanted to remake him into the new VW!!! But...
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Volkswagen New Beetle : Even though a new version of Bumblebee in the form of a VW New Beetle would be more than fitting, Hasbro designer Aaron Archer allegedly confirmed backstage at the Official Transformers Collectors' Convention 2003 that VW had already repeatedly rejected any possibe involvement in "war toys" due to the company's rather inglorious origins (according to rumors, the exact wording of the reponse was "No - and please never ask us again!"). Incidentally, concept sketches both of Bumblebee and a possible remold, Cliffjumper, can be found under the dust cover of the book The Transformers Binaltech & TF Collection Complete Guide which was released in March 2005 (sketch of Bumblebee, larger image, rear view, sketch of Cliffjumper, larger image, rear view).
Nevertheless, according to a statement at the San Diego Comic-Con 2004, Hasbro are still hoping to obtain a license from Volkswagen sooner or later. The same was once again confirmed by Hasbro at the Official Transformers Collectors' Convention in July 2004."