Speed Control Cable problems of the 2015 Honda Accord

Vehicle does not decelerate when going going down hill or driving in city city traffic or on a city street, highway and freeway. On 4 may 2016, tested drove the vehicle with american Honda motor factory representative mr. Tom zumieda. . Mr. Zumieda stated he found the vehicle to be working as designed and at factory specs. He did verify my complaint and advised and demonstrated how to use cruise control when applicable to change the shift pattern to help the down shift process when showing down and foot of the gas pedal.