There was a reply in there that mentioned that it depends on how much you drive, etc. My point in this thread was definately not to say that having a hybrid is a bad thing if it's your primary vehicle, or only vehicle, just that it doesn't make sense if you buy it as a second vehicle strictly for the purpose of saving gas. If you spend 20,000 bucks on a hybrid and keep it for the average lifespan most americans do, which is 5-7 years max, than the cost of buying and maintaining the car FAR outweighs the fuel savings unless you commute an hour or more each way to work.
For instance, if you drive 20,000 miles a year, at 22mpg in the SLK (assuming you do mixed city/highway driving), you spend about 3630 a year in gas if it is 4 dollars per gallon. That same 20,000 miles, at 45mpg in a hybrid is about 1780 bucks. That means you're only saving $1,800. Factor in $50 a month in insurance (assuming a multi car policy for cheap insurance on the hybrid and good driver history), and you're really only saving $1200 a year for the hybrid.
Now if the hybrid is your ONLY car, that's fine, and saves you good money each year. However, lets say you already have an SLK. If you have kids than obviously you need a 2nd car so the hybrid is the way to go. Once again though, we're talking about getting a hybrid STRICTLY for the purpose of mpg savings (see thread topic). So if you're an empty nester or a youngin with no plans of having children like myself, you're sittin' there with an SLK as your primary and only car. Does spending $20,000 to buy a hybrid that you'll probably only keep for 6-7 years really make sense? If you save $1200 a year, that's $8400 in savings on gas over 7 years. But wait, that's assuming you put the entire 20,000 miles on the hybrid. What about weekend drives in the SLK? But lets give it the benefit of the doubt and say you save $8400 over 7 years using the hybrid that you paid $20,000 for. At the end of that 7 years you'll probably only be able to sell the hybrid for $10,000 if you're lucky. That means you basically spent $10,000 just to save $8400, and don't forget interest on the loan if you took one out to buy the hybrid. In the long run, buying a hybrid as a SECOND car, STRICTLY for the purpose of saving gas, just doesn't make sense.
If you're doing it cause you have the money to spare, and you just wanna save wear and tear on the SLK, avoid the daily parking lot door dings, reduce your risk of vandalism or theft, then cheers. I say by all means do it. I personally can't afford to get a second vehicle just to protect the SLK from the hazards of daily driving, but it's certainly something I wouldn't mind doing. The original idea of this thread though was to give the cons against buying a second vehicle strictly for the purpose of saving money on gas. THAT, in my opinion, is definately not worth it. We're here because we have SLKs, because we love them, and because gosh darn it I don't care if gas is $10 a gallon we're going to drive them! .... of course if gas reaches $10 a gallon my argument in this thread is mute and I'll probably go pick up a 50mpg car too as my daily driver