Here is free AI Software which would be the easiest to use for someone wanting to give it a go, over the other 2 I have listed.
Go to clipdrop.co and then to Stable Diffusion XL section.
As with all of them there is a free and a subscription option.
On the free version you have to wait approx 1 minute or so for the pictures to generate, it will generate 4 at a time. No biggie you can to other things while it does its thing in the background. You can keep generating 4 at a time from there with the same wait time.
No daily quantity restrictions like the other 2
Other trade off is that it leaves a watermark on the images of the free version.
It is super easy to use. Select Filter, Image size and type your prompt. There is also a remove prompt if you so wish.
I was trying it out to see if I can get a GT Panel Van type image and got this.
Apart from the glitches on the bonnet area i like this one. It would not be hard for Ford to make something like this to give us an alternative to Dual Cabs.
Finally here is a Retro looking XR inspired Falcon Coupe complete with a glitched model.
I kept this one for the car as it is impossible to regenerate.