Yes it's usually done with glycerin which you can get at your LHBS to preserve the yeast cell walls from freezing and rupturing. Most people however will make a starter first and take some small amounts of that, that way they have a lot of fresh and healthy yeast and then pitch the rest when they brew. Look up the yeast slanting threads and stickies. They go into a lot of detail about the whole process.
A 2006 study found that the average American walks about 900 miles a year.
Another recent study found that Americans drink an average of 22 gallons of beer a year.
That means, on average, Americans get about 41 miles per gallon.