You can respond to the proposal by completing the online feedback here...
http://www.smartsurvey.co.uk/s/road-emissions/
Not sure why but, the Question 10 on kitcars in the proposal becomes question 15 in the survey.
I have just completed my feedback and for sections I was not interested in, I just typed 'Not reviewed'. For the Kitcar question I cut and pasted my response above in the box.
It's an easy and a relatively quick way of providing feedback.