The truck driver who went down a highway embankment in Danbury yesterday morning and snarled the commute lost control on the wet roadways.  State Police say 26-year old Jamie Zene of Hartford was in the left lane of I-84 west by exit 3 and tried to negotiate the right curve,  He struck the metal beam guardrail, ran off the roadway and ended up at the bottom of the embankment.  The crash crushed the driver side of the cab.  No injuries were reported.  Zene was issued an infraction for failure to maintain lane and given a verbal warning for traveling too fast for conditions.