its probobly a bunch of nothing... however, i havent seen a 3 prong plug, and two sensors on the rear of a mfr. vehicle...
my guess is the plug is simply an engine block heater during the winter months... and the two electronic pieces on the tail are related to the trailer hitch (usually for 5th wheel testing when on the proving grounds) and measure various telemetry at that time...
besides that... the only thing i think is really new here are the headlights are supposed to turn while your turning.
2008 XLR??? what is going on here?
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