Most motorists I know love bike lines because it means they won't have to deal with bikes behaving badly in the street. If the amount of space the bike lane takes up really does narrow the road enough to be a problem that road should be expanded, redesigned, or moved so that there's plenty of room for both. We do pay taxes so that we can have nice infrastructure and that makes us entitled to it. We should be upset when it's substandard. Cities just need to do their jobs and put our tax money to work for us.