Here are some ideas I've been looking into...
http://www.greenspeed.com.au/ http://www.pedicab.com/ http://www.backwoodshome.com/articles/hackleman57.html http://www.cyclecar.com/?13283 ...And these...
http://www.angelfire.com/wa3/quadcycles/index.html (have a look at the "Manufactures" linked page)
http://www.freeenergycar.com/ http://www.ihpva.org/Builders/ http://gizmodo.com/394530/trailcart-...f+road-vehicle http://www.lightfootcycles.com/power.htm ...And making your own fuel,(E85 or E100)...
http://running_on_alcohol.tripod.com/ ...An excellent vehicle to run pure alcohol in,(as VW engines were designed to run on E100 in the first place)...
http://www.wombatcar.com/ (Frankly, it doesn't have to have this peticular body, but some form of VW buggy will work fine). Here's a site to find lots of VWs and parts...
http://www.thesamba.com/vw/classifieds/ IMHO/IHTH
Michael