Apple’s ARKit could be huge for virtual car showrooms and online sales

If by huge you mean that in its current state it will be a nice novelty experience for some interested and tech savvy people, then I agree completely. On one hand cardboard VR is a huge success with likely millions of people who have tried it or heard about it. On the other hand it hasn't registered in most people's lives as more than a novelty, compared to the habit forming technology and life changing experience of mobile phones.

At the same time I have to acknowledge that ARKit is just the initial developer interface to future hardware products in the Apple ecosystem. When they announce Apple AR sunglasses with the same portability and form factor as your Ray Bans, then we can start talking about huge.