Need help re car seats! We have 2 children but share childcare with my sister including school runs which haven't been a problem until now. My niece has just started school and my hubby will now be picking 3 children up from school ( niece, nephew and daughter), taking them to my sisters and dropping niece and nephew off and picking our son up. The problem we have is that our son's car seat is very big (he's still in a harnessed seat) and we cannot get more than one booster in the back. We did think maybe we could put said baby seat in front and have 3 booters in the back seat but none of the children are over 22kgs so we will need highbacked boosters that won't fit! Anybody know a way round this please