Purchased a Joie brisk and just about toppled over the buggy pulling it up a set of stairs to my house. The break overhangs and catches and then jams on! Not a good design. Informed the manufacturers and they say it is not designed to be used with stairs! I must use the disabled ramp! What ramp - it's a house!! What about getting it on a bus? Or train? Must you have a car and live on the flat to own this buggy??