Separate bike lanes are very important for at least 2 reasons:
1. it legitimizes bicycling as a form of TRANSPORTATION and not just something you put on your SUV and take to the park

2. SAFETY!. We need families bicycling as a form of TRANSPORTATION. For families, the main issue is safety. The key advantage of separate bike lanes is that they're safe.

I believe seperate bike lanes are needed but not everywhere. They're best for high density areas like downtown. I also would like to see them as a way of connecting homes to schools/stores. As far as commuting to work on a bike. I see a lot of these commutes requiring roads with speed limits over 40mph. I don't think these roads need separate bike lanes-- but I wouldn't be opposed to the idea.

As far as commuting to work on a bicycle goes, people should electrify their bikes. I have an electric bike. It is a motor kit that I installed on a regular bike. Getting to work is very fast (almost as fast as a car) and sweat free. This bike is my second car.

This additional safety is questionable. I know a lot of experienced bicycle riders here in Germany who argue that by taking bicycles off of the road, drivers lose their attention. The critical point is at crossroads, and it seems that cyclists are safer there if they are sharing a lane with cars, because they will be seen more easily.

BY the way, are all those guys in the film driving on the wrong side of the road?

Also, in the city the most dangerous place is intersections. Are the segregated bike lanes helping at the intersections? How? Do they make it harder for the cyclist to turn into a crossing street, across traffic? As someone said up-post, the devil is in the details.