An open question to the A2 owners out here - I'm pondering down-sizing and am looking at the A2. I'm wondering, how practical is the boot in real-world day-to-day use. I'll shortly have two children, thus necessitating the use of the back seat for baby car seats, so wondering if the boot is still useable in that scenario. Can you fit anything in it? If you were to put a Bugaboo in there, is there room for anything else? Does anyone use a roofbox? Also, what is it like on a motorway run? Comfortable?