Any track can become very slick given certain conditions even when not prone to it.
I recall a small block feature at EWS that was run right after a 25 lap URC feature, when I went out the lights were reflecting off of the surface like it was made of glass, it was. Had never seen this before or after at Windsor.
Did OK with a top 5 but it would have been better had I simply removed 4 of the spark plugs from the engine.
US 13 could also become quite slick after 2 days of racing during the Delaware State Championships.