Cars - I need to draw even more than I do!

I'm useless with ellipses, so I'm so grateful that Procreate fixes the wheels for me! But I will need a whole lot more than that for me to become proficient at drawing cars. The only issue is that I'm not that interested in cars, so it's kind of hard to persuade myself to practise drawing them! How will I motivate myself?

These are supposed to be the same cars, this time done with a brush pen!!