I'm going to attempt to give you a legitimate answer, to a stupid question. I've never trusted Google's volume estimates in the keyword tool. So, if you do any SEO and want to get more accurate estimates of volume you can use a throw away account to get them.
Say your target is "harley davidson road gear" for example. Create an ad for this keyword (exact match) that you think no one will click on. E.g. "sweaters for your poodle". Bid high enough to get on the first page. Let it run for a few days and check the impressions. Do the math to figure out what the impressions for an entire month would be. This is the actual volume for that kw. Or closer than what Google estimates.
Again, the goal is to get NO clicks. So optimize your ad copy to discourage any click through. You'll probably get a few random ones, but it will likely take a bit for your $10 to run out if you're smart about it. Keep in mind that this will fuck up your QS, so don't do it if you plan on using the account again.