Bike theft is a pretty sizable problem in cities, with only the most industrial-strength locks keeping nimble-fingered thieves from taking off with your two-wheeler.     This Bike Tree concept helps alleviate this problem by raising bikes up and out of reach of bike thieves. It also helps save space, allowing more bikes to be parked in a smaller area. I like it; let’s see some of these installed in NYC, eh?         via: