Go download this free magazine: http://www.rpgnow.com/product_info.php?products_id=86197&filters=0_0_0_0&free=1
Check out the vehicle on pg. 6, the one with the legs than have treads on the feet. Looks like a vehicle that can use treads over decent terrain for speed and switch to walker mode for really bad places.
I looked at it and it just seemed like something to work into an EP game. Might need to disassemble it to get it thru a pandora gate and rebuild it on the other side, but I like it anyway.
BTW, the tank on the cover, couldn't use it for EP as it's a grav type, but it shows an interesting concept for EP warfare, the ability to mount almost ridiculous amounts of guns on a chassis because the guns don't need gunners, just AI or infomorphs in the computer to operate them effectively.
"I learned the hard way that if you take a stand on any issue, no matter how insignificant, people will line up around the block to kick your ass over it." -Jesse "the mind" Ventura.