I took this smart miles box out a couple of days ago. I've done one journey of 86miles mostly motorways. I drive at a steady 50-60mph to get fuel economy - guess what... on this one journey I scored 100% for speed, 100% for braking, but 0% for acceleration. I guess Hastings Insurance don't know how to join a motorway correctly... For the record, i'm 45 years old and rather awkard so intend to be a fly in the ointment with Hastings and beat their target of 50% despite their scams. I voted this 5 stars to draw attention, as it looks like most people wouldn't even rate 1 star. Watch this space in 2017 for further feedback.