Cadillac is practically defined by the big Escalade these days. It also makes some excellent sedans. Remember those? Sedans? The smallest one in the Cadillac lineup is the CT4 which replaces the ATS. It can be had in sport attitude as the CT4 V. Tom Voelk tests a Premium Luxury model with the optional dual volute turbocharged 2.7-liter four cylinder. All sorts of tech is available, including Super Cruise. But can it match the refinement of the European completion? Depends on what you’re after. Tom Voelk checks out an AWD model.