Yup, that's the one, The DKW Monza, based on the DKW 3=6, which makes no mathematical sense at all. The radiator is located behind the engine, hence the wrong way round engine bay.
Next one then:
1. When it was presented it wowed the audience who saw it.
2. It was built to race in a specific class of a specific national championship.
3. Curiously, each of its main competitors in that class has a different engine configuration.
One more clue then:
1. When it was presented it wowed the audience who saw it.
2. It was built to race in a specific class of a specific national championship.
3. Curiously, each of its main competitors in that class has a different engine configuration.
4. It was presented at the Geneva Motorshow.
One more clue:
1. When it was presented it wowed the audience who saw it.
2. It was built to race in a specific class of a specific national championship.
3. Curiously, each of its main competitors in that class has a different engine configuration.
4. It was presented at the Geneva Motorshow.
5. It is powered by a V8 engine.