Have you noticed that car rental rates have dropping recently? Now that fall is arriving, there are very few leisure renters in the marketplace. So that drives prices down. Also, Clark's been seeing a lot of coupons that offer things like $25 off a rental or 20 percent off the entire bill. The easiest way to get these coupons is to sign up online with the individual car-rental companies.

Clark rents cars up to 40 or 50 times a year, so he's very interested in a new Hertz sub-brand that he read about in The Orlando Sentinel. Simply Wheelz is a discount Hertz company doing a trial run in Orlando -- the world's largest leisure car rental market. Weekly rentals are less than $100! Clark believes that Simply Wheelz is patterned after Europe's easyCar. You book online and use an automatic rental machine to get your vehicle -- the whole process is automated and there's no human interaction. Hertz is hoping Simply Wheelz will give it an edge over Enterprise, which is usually 30 percent cheaper head-to-head at the airports.