Travelling down the A46 this morning, 1 lane closed for grass cutting, so driving reasonably slowly when a car about 4 in front of us suddenly stopped so we all slammed on our breaks but the weight of the Van meant I couldn’t slow down quickly enough. The car in front of us hit a lorry delivering caravans in front of him and well rear ended the car in front of us. Lucky we’re both OK which is the main thing but to add to our misery the first car just drove off.