Interesting question. No time limit, but cars are a reflection of people's status, that and maybe their TV, so rather than appear a person in need, people will go out on a limb to get new . When I fisrt came here I couldn't believe all the new cars on the road, it dazzled your eyes. Another thing is that after you buy a car, after like three or four years, the dealer sales people will start calling you up and hounding you to come in and have a look at new models. We bought a Nissan years ago, and when the guy started to call me up every few months at my shop, I told him to stop. i didn't want to be impolite, because I know that orders come from above. So what's he do, starts calling my house to bug my wife. Pissed me off, and once when I was home I told him that we loved the car, but when it needed to be replaced, the last thing in the world I would do would be to buy a Nissan. A weak willed person would be a slave to the car dealer. He did stop calling after that. We drove that car for twenty years and all it ever needed was tires and a fan belt.
I'll tell you the lamest thing in the world that is hard to believe. If you work for a dealership and don't drive that brand, they usually won't let you use the parking lot. A friend told me his daughter drove a Volkswagon and she worked for Toyota. She couldn't use the company lot, had to park down the street and go there at night to get her car to go home, in the rain or snow, whatever. It is very common. if that was my daughter, I'd be down at that dealers in a flash to let the manager know my opinion about that, even though it would get her fired no doubt. People here, they just shrug their shoulders. In the US, I bet someone would take that to court.
I remember dropping one or two trees where my adrenalin had me actually shaking while making cuts. Huge relief when it goes the way it was planned! 
