2019 Alpina B5 Touring review

"What's an Alpina?" It's rare a car flummoxes my friends and family, but the Alpina B5 had them all perplexed. "So it's a BMW wagon?" (close but not quite, try again champ). "Wait, is it related to Alpine?" (no, Mum). "Why are you so excited about a wagon?" (at this point I started searching for a new girlfriend).