It's too hot in NYC for a sweater bike, but it exists - no one knows who/why yet.

Update: Some clues in the comments on CRAFT! Thanks Rachel!

JouleS THE ROBOT via .

Joules exists because designing and making things is fun. Joules came from a challenge to build an electric tandem bicycle powered by actually pushing the pedals like a person. Fun kinetic design was part of the intent, practicality was not. Riding with Joules is a reminder that engineering and craftsmanship can be joyful pursuits. Engineering and art need not be separate. I hope that Joules can remind kids that creating real things is great way to spend time, and perhaps a career.

• DIY: Simple Tandem Bike
• Flashback: Tandem Dog Cart

Impressive collection of cargo bikes. Alan writes -

...a report from the edges of human-powered conveyance, where pedal pushers are hauling car- and pickup-worthy loads on cargo bikes and trikes. The ingenuity evident across the Northwest and the world in finding practical, nonmotorized solutions to the daily challenges of urban mobility is heartening, even inspiring. It’s also sometimes whimsical and amusing.

Bike hacker Peter Wagner, whose work has graced this blog a zillion times, has created this aquatic(?) bike equipped with flippers for driving through water and mud.

Stock fork surpassed by adding rear 2/3's of a full suspension mountain bike as the springer front end. Double rimmed drum brake 16" laced to 26" alloy, get us height, braking and with plastic lawn sign in between the spokes, a dandy rudder!! Also tripled up on Torrington freewheeling axel bearings for the rear drive component. 3 of them with 6 all-thread bolts thru their sprocket teeth, making them act as one, ideally reducing by 2/3's the strain on each one..also bolted by the 6 all-threads, a 65 tooth Schwinn Exerciser cog..dune/mud/hillclimb to test them this weekend @ the da Vinci Days Kinetic Sculpture Race in Corvallis. OR.

Rear wheel 'overwheels' are 40" trampolines for mud/sand/water paddle wheels....shall see if they survive the test weekend also....)