Volcanic rocks often have a vesicular texture caused by voids left by volatiles trapped in the molten lava. Pumice is a highly vesicular rock produced in explosive volcanic eruptions.
The Dodge Nitro is available as a sport utility. Inventory prices for the 2011 Nitro range from $6,585 to $16,609. It gets EPA-estimated 18-19 MPG combined.
The nicotine inhaler is available by prescription only. It can be bought under the brand name Nicotrol Inhaler, and the average retail cost is about $45 for a package of 42 nicotine cartridges. If you use the maximum of 16 cartridges allowed per day, this method could run about $17 per day.