Cadillac is making a serious attempt to claw its way back into the heart of the luxury market. Its lineup of rear-wheel-drive sedans (the ATS, the CTS, and the CT6) are gratifyingly dynamic and punctuated by the 464-hp ATS-V and the 640-hp CTS-V. The lineup now features a range of SUV choices: First, there's Cadillac's first subcompact crossover, the XT4, which is all new for 2019. In the middle are the mid-size XT5 and the XT6. A bit of the old guard is still present in the truck-based Cadillac SUV, the Escalade