Thanks for all the responses everyone! Schwalbe 2.0" big apples are now on my shopping list.

So here's my little project. I'm building an E-folder for commuting purposes. Regardless of what I spend on something, I'm one of those hobbyist that mod the crap out of things. For this project, the bottom-of-the-line Boardwalk works the best for me because of the cromoly frame, horizontal dropouts, and normal chainstays (ie. unlike the Dahon Curve). Any components that can be replaced will be replaced. I'll even get around to modifying the Dahon handlebar/stem at some point. Yeah, I'm crazy like that. This bike hasn't even been ridden around the entire block and I've already voided the warranty by spreading the dropouts. That 74mm front fork may have to follow suit if I decide to try one of those Shimano dynamo/drum brake setups.

The dual drive hub I was referring to previously is not the recent SRAM offering. I will be using a Staton hub that has both LHD/RHD.
http://www.staton-inc.com/Details.asp?ProductID=2771

The left drive is for a Staton chain drive. The gas kit probably wont be used much on this bike, but it will be mega fun when it happens. The Staton hub is 48h is laced to an Odyssey Hazard Lite 20x1.75" rim with DT Swiss spokes. To complete the wheel, I just installed a new IRD 7 speed freewheel and redished it today.

The main drivetrain will be a 36v 900w Cyclone motor powered by LifePo4 batteries. I've got the bike back together for now, but tomorrow I am going to work on mounting the Cyclone motor.

I'm really not much of a cyclist...more of a hobbyist. I just like to mod the crap out of stuff. I'll try to post some progress pics tomorrow.