Like many automakers, Cadillac is a brand in transition - concurrently embracing its V8 heritage and all-electric destiny. As of today, you still can’t buy a Cadillac EV but there are a number of tasty offerings sold under the V-Series umbrella. That’s the land where hand-built, supercharged engines and manual transmissions still roam free led by a pair of sedans: the range-topping, pavement crushing CT5-V and its little brother the …