Bright yellow light accelerates above road in Wayland, MA, to a high speed noiselessly.

Bearing east on rt 30, (commonwealth ave) and slowing to turn south on Oak st.  a passenger and myself saw a bright golden/yellow light in the distance seemingly a couple hundred feet above the road and following the path of the road.  It was difficult to guage the distance and the light was not flashing so I immediately pulled over to see what it was since it was moving fairly slowly.  As I pulled over and opened my window I stuck my head out to see the light immediately accelerate at an incredible rate over my vehicle and continue (possibly) following the path of the road.  During the initial part  of the siting we watched the light for perhaps 15-20 seconds.  After the light accelerated I jumped out to see where it was going and it was gone from sight in only a few seconds. It was a quiet night and we did not hear any sounds from the object whatsoever.  Less than a minute later a police officer pulled over and questioned us.
Witness indicates that the date of the event is approximate.  PD