Want your own Batman Tumbler but can't afford to hire Morgan Freeman to build you a full-size one? Well fear not, intrepid crime fighter, because some guy on eBay is selling $30 plans to build one out of a go kart. Of course, if you don't want to pay, I'll tell you how to make one for free.
Step 1: Steal a go kart.
Step 2: Add a bunch of spray painted sheet metal.
Step C: Multiply your chances of getting tetanus and lockjaw by four score.
Step 4: Subtract any street cred you may have accumulated over the years.
Step 5: Divide by Robin. And by divide by I mean have intercourse with in the back.
Step 6: Safety first -- make sure to wrap your junk in a costume (I guess this should have been Step 5).
Step G: Get tested.
Hit the jump for a video of a finished Dangermobile in action.