The Karsan design for the Taxi of Tomorrow gained a big fan yesterday when Senator Tom Harkin (D-Iowa and original sponsor of the Americans with Disabilities Act) wrote a letter to Bloomberg urging the city to pick a "fully accessible" cab as such a choice "would represent a historic step forward in advancing the cause of disability rights in the U.S. and around the world." The only model of the three that fits that description is Karsan's, which includes ramps on both sides and room for a wheelchair. The Taxi of Tomorrow winner will have exclusive selling rights to the NYC taxi market for ten years.