If you know New York motoring culture, you know that when Saturday morning hits, the toys come out to play. There's the XK-E on the Upper East Side. There's any number of Porsches from Jerry Seinfeld's lair on the Upper West Side. And from beneath the shadow of the Williamsburg Bridge, there's Jane Motorcycles, purveyor of tough bikes designed for city living and gear to match. Start with the Driggs riding jacket in camo, then check out the rest. Act like you know.