A quick-thinking car enthusiast snapped a few pictures of a Cadillac prototype near General Motors’ Milford Proving Ground in Milford, Michigan. ‘General Z‘ of the Camaro Z28 forums wasn’t sure what he photographed, but it’s clear the vehicle is the same as the 2008 Cadillac CTS prototype spied earlier this week. The car is also suspected to be the same vehicle that was previewed on 60 Minutes in early April. Images after the jump…
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