Looking for someone who has tried to fit two Britax Romer Kidfix car seats in the back of a Ford Focus Mark 2! Our twins are ready to upgrade to age 4-12 car seats and have been highly recommended the Britax Romer Kidfix by two friends. However we drive a Ford Focus Mark 2 and would ideally like to be able to have someone sitting in between the twins at the back of the car if needed. At the moment they are in Maxi Cosi Pearl Pro seats and only a pretty slim adult or child can squeeze into the back. The Britax Romer measurements say they are 54cm wide which is 7cm wider than Maxi Cosi says it is - but the Britax has this side impact protection thing and I don't know if the 54cm measurement includes that - has anyone tried to fit this car seat into this car? Alternatively can anyone recommend an age 4-12 car seat that fits two seats in the back of a Focus leaving a reasonable amount of space in between? Thank you in advance - went to three shops today and none of them had a display model.