Graco has a car seat called the forever car seat that is supposed to transform with your kid making it the only car seat that you will ever need. It will last for 10 years of use. It cost only 300 dollars which is cheaper then buying every car seat your kid might need if you buy the high end type seats. I have thought about getting it, but my kid already has a car seat. I'm also worried about stability, by the time my children switched car seats there's was pretty worn and trashed. I don't know how any car seat is supposed to stand up to ten years of wear and tear.