Yes, a sample of your ideation may help so we can see where you are having trouble with.
Yes, look at cars and their design language. Truly analyze it and find a way to describe it with words. After you have done this exercise then try to apply that design language to a product.
I also remember the first time I learned/used mood/inspiration boards. It’s easier to come up with forms if you have some kind of compass. If you are just trying to create forms aimlessly and in quantity it may be too overwhelming. It’s easier to come up with a few variations per design direction.