What about if we put www.opel.de down the bottom in real small font of our logo to 'link' blitz in with their site for them, cause mentioning of their website should make it ok to use there logo relative to their page...
also its registered as lightning (ours could be 'Z') also it breaks the circle ours don't have to... adaptations to the the registered image should allow us to use it.. also its registered as 'class 12 and 37' these appear not to cover signage, not sure if there maybe another registry to cover thAT?? just putting some possible loopholes out there