Part of the problem IMO is the car of the week type of guys. They get the latest when it comes out, and THEN they complain that its too expensive, so after a few years of doing that, they quit because the are expending too much money. Yet, they dont realise that they are making it too expensive for them beacause they get the latest car, engine, motor, batteries etc. But they are gettin beat by people driving TC3s. Soemthing that these people fail to see is that the longer you stick with a car, the faster you get, because you get time to try different setups, plus you get confortable with the way the car handles. Not to metnion they guys that buy a new car of the same model they have every season.
IMO getting a new car every 2 years is about right.