Well, thumb man cartoons usually have characters with big heads and small bodies for a comical effect. The colors could be bright and bold to catch the eye. Also, the storylines tend to be short and straightforward.
The 'Crime Against Kansas' political cartoon often depicts the power struggles, violence, and social unrest that occurred as a result of the political situation in Kansas. It might highlight the exploitation or oppression faced by the local population and the need for justice and reform.
Well, it could be part of a fantasy world where such transformations are possible through spells or advanced technology. Maybe the teenager has a unique genetic trait that triggers the transformation into a car when certain conditions are met.
The quality of a pennyworth comics is hard to generalize. It can range from mediocre to surprisingly good. It often depends on the creator's skills and the effort put into it.
You should check out 'She-Ra and the Princesses of Power'. The characters show a lot of toughness and courage. The storylines often feature them taking on big challenges and coming out on top.