This was a job interview assignment for a trainee position at a toy design company that created
The brief was to come up with a toy vehicle concept for Actionman to stop an attack Dr X whose base was at the inner core of Mars.
I think I had a week to do this and this included study of past and present Actionman cartoons, comics, toys, characters, vehicles, comic stores.
Also looked up real life and science fiction tunnelling technology and vehicles, fictional and real life [product design specifications, what was needed and carried out some sketch, Lego Technic PPP (Proving Principle Prototyping) to looking into the mechanics and initial CAD development. The CAD done in Solidworks development only got as far as an engine before I was due to go to the interview.
After the interview the project was shelved when I did not get the position. I will look into it more when I have time and better CAD skills.
Below are some of the sketches, PPP experiments and CAD work from the report you can see in full clicking the image on the left.