I dunno about what's reasonably safe, but like a bike helmet, you don't want to use a car seat that has been in an accident. I think it was the manufacturer th

I dunno about what's reasonably safe, but like a bike helmet, you don't want to use a car seat that has been in an accident. I think it was the manufacturer that recommended not using one manufactured more than 7 years ago (so it could be bogus). Although, I believe in the U.S. you can get a free car seat from any fire station (or hospital?)