Speaker 1: Today on our 2017 Buick Envision, we're going to be test fitting the RockyMounts SwitchHitter Roof Bike Rack, part number RKY1270. We already have the bike installed on are rack, so let's take a closer look and show off some of the features.How this actually attaches to the bike rack, we're not going to have any frame contact at all. Instead, we're going to have this rear wheel… see more >