If it hasn't gone to hearing yet, you guys need to pack the hearing room. Get some veterans in there, get someone from your state VA office, submit some photos of vehicles in parades with smiling people in them. And turn out as many at the capitol in MV's as possible. That should create an interesting parking situation for them. Of course call your local media, if you have somone that covers you in parades, in a good light. Send a note to the National MVPA office. There are MVPA's that are not on this site.
Hopefully you have someone on the list of sponsor's that is a friend and they put their name on it purely because they didn't know.
We had a similar amendment in WA last year and after talking with a friend, it did not come out of committee. Get on them quick.