Narrower, higher pressure tires for a trunk-portable base mile roaster. Getting a hitch receiver on my Hyundai tomorrow... so I can carry my 'normal' bikes without partial disassembly... so I slapped the Honey Badgers back on the Sun wheelset, though will keep the new wheels clad in road tires... just too handy not to. I can carry it in the trunk without worrying about a casual stickyfingers noticing it.