There were cars being trailered to a local street racing spot around me in the early 1980’s so using a trailer isn't something new. And I suppose it was going on long before I was born.
we used to have some video of my dad street racing in 1966 but that film wasn’t transferred to a different media and it is now lost.
Nothing new under the sun. Using a trailer doesn’t make a street car a race car. I will be using a trailer for my car for anything but lock stuff. The wear and tear on valve springs and things isn’t worth it.