Cheaper veggie diesel…
In MAKE 03 we showed you how to make your own biodiesel, and now there appears to be a big breakthrough lowering the costs to get the esters “Japanese scientists may have found a cheaper and more efficient way to produce “biodiesel.” The renewable, vegetable oil-based fuel can be used in conventional diesel engines, which are found in about 2 percent of cars currently sold in the U.S. and in about 40 percent in Europe.” [via] Link. Also – listen to our interview with a biodiesel Maker.
Chris writes “Considering how many people bought the HP Bluetooth stereo headphones and got disappointed when the headband snapped, I thought that it was time to do something useful with the ‘broken’ headphone. We’ll take you through all steps of dismantling the Bluetooth receiver and building it into a nice mouse housing with 12v in and line out. And as the device keeps its battery, you can also use this as a portable Bluetooth stereo receiver and plug in you high quality headphones or even connect it to your stereo at home.” 
This might make a good low cost DIY centrifuge for here on Earth too – “For most space travelers, the first effect of weightlessness they feel is nausea. But over the next few days and weeks, the lack of gravity takes its toll on the rest of the body, leading to muscle and bone mass depletion and troubles regulating blood pressure…researchers at UC Irvine and the National Space Biomedical Research Institute (NSBRI) have developed a two-person, centrifuge-like, one-stop workout machine that makes its own gravity. They call it the Space Cycle.” 
Clever instructable for protecting and camouflaging your bike using an old innertube – “An old innertube or two can be artfully used to protect your bicycle frame from damage. This is excellent in preventing damage to your frame from using U-Locks to lock them up. Also great to dress down your bicycle for urban environments.” 
Just like video game cars, real cars have cheat codes too…“Here’s a(n) [alleged] way to disable the traction/skid control systems called VDIM on the Lexus IS: “start the car with the parking brake on…then foot brake twice. (keep the foot brake down). then parking brake twice (keep it down ) and repeat till skid light is on the dash…..it will reset when you restart the car” [
Here’s a simple and clever way to build a motorized cart for kids: power it with two 18V cordless drills. The drills friction-drive the cart’s front wheels via two 3/4-inch sanding drums, and you drive and steer the thing by pulling the drills’ triggers, one with each hand. Two fully charged drill batteries will run the cart for about 45 minutes of play time. Thanks Paul! 
How to make a war driving box – “It’s very easy, but this is not a step by step HOWTO, only a guide to build your own box. To start, you need a small up and running OpenBSD System on an Intel based System. This Sytem can run on in VMWare or on a older PC System (I use a 500 Mhz Pentuim System with 4 GB HD and 128 MB Ram)” – Thanks Jason! 