I have a BMW 316 compact I have two of the 9month - 11years car seats and cant get a normal booster in the middle I have come across [[http://www.kiddicare.com/webapp/wcs/stores/servlet/productdisplayA_36_10751_-1__108290_10001_?cm_sp=product_lister_page-_-endeca_promotions-_-recommended_product this]] I was wondering if anyone has tried one and is it any good?