When bikes and cars mix on the road it can be a tense situation for everyone. Helping two- and four-wheeled traffic co-exist is a major theme of the second annual Kalamazoo Bike Week. It starts Thursday, May 9th, with a “Community Forum on Cycling”. Bike Week Co-Chairman David Warwick says he hopes it attracts motorists as well as bicyclists. The forum starts at 6 p.m. in the Lawrence Education Center at Borgess Medical Center, 1521 Gull Road, in Kalamazoo.