I created a set of wildcards for this LoRA, check them out in the other version tab. All sample images were created with those wildcards. You will need the SD Dynamic Prompts Extension - autmatic1111, to use Wildcards.
Helpful positives: vehicle focus, no humans, car, wheel, tire, debris, fire, spike, rock, dirty, clean, shiny, oil slick, reflection, splash, droplets, rust, sparks, asphalt, ground vehicle, sports car, buggy, truck, 4x4 off road, super car, mechanical
I recommend wide aspect ratios. All samples were made with 5:4, but 16:9 works excellent.