Although it’s the 3rd video in the series, Cars 3 is kinda awesome. If you want to watch it online then here are a few options (we checked these as recently as November 2018):

 

Just cancel before the 30 days is up and you don’t pay a penny, simple. If you’re wanting to watch Cars 3 for free and in high quality right now, then a free trial with Amazon Video is your best option.