Im in the opinion that ariel atom isnt safe for road racing or any type of racing.
I think that the body of the ariel atom is too exposed to be used in any type of racing. One option is to cover the chassis, and fiberglass comes to mind. But i would think this would significantly increase the cost. Unless of course, you would be able to mass produce
this.
Another concern that i have is the height of the roll hoop. Since it is one of the main structure of the car, i dont think you can hack it and place a higher roll hoop as a replacement. Maybe you can install new roll hoop that is high enough to be legal in racing, but why?
As for affordable race series, my opinion is, to stick with what we have, which is road racing car like kancil/proton etc. Instead of creating something new, these road cars are more than enough for driver development.