Why do mountain bikers ALWAYS steal air from cars' tires?
 

=v= It's "Evil Week" on lifehacker, and one evil hack they have
(which is getting the blog commenters' panties all bunched up)
is this little gizmo:

http://lifehacker.com/5669493/

Obviously this isn't going to inflate a 120psi road bike tire,
so it's clearly intended for those eeeeeevil MTBers.
HTH, HAND,
_Jym_