I have a Facebook friend that have a petition to get MTA (NYC) to fix the gaps and door heights that can and does prevent persons that need to use a wheelchair or scooter from boarding or detaining a NYC subway car. Please go To "http://tiny.cc/MindTheGapMTA" and sign the petition. THANK YOU
I have included some links to videos and pages where you can read her:
NY1's Interview of her which can be found by clicking this link.
A video she did herself showing what she goes though in a give day.
You can read more of her story on her tumblr at http://mindthegapmta.tumblr.com/