I agree with kayoone; it doesn't really seem like this could consistently be true or else it would just be bad business.
In general, though, the best way to combat the depreciation of a car's value is to take out a long-term 0% interest loan, provided of course that you can get it. This works because (1) inflation reduces your effective net expenditure on the car; (2) you can take the cash you would have spent on the car and invest it instead; if you even conservatively get 3% returns a year, you've still come out far ahead.
Regarding (2), if you can't afford the car in cash, then you can't afford the car. That's always been my motto. Financing is a choice; it should never be something you are forced to do, unless this is your first car straight out of school and you just have no money yet.
If that was always the case, leasing agencies wouldnt be able to make profit, so you might just have stumpled on some really good offers which popup from time to time. In general, leasing costs hould be equal to or more than the deprecation in value of the car itself.
I remember checking how leasing a Porsche for 3 years would cost me less than half of the value the car would lose in that time.