Car insurance runs out on sat, have rung to cancel as I could get it cheaper elsewhere. Transport issues with DP means he could really do with taking my car away to work for the rest of the week (works away) and I don't need it as I'm WFH, he needs to leave at 5am at the latest and I can't ring the car insurance people until 9am. Can I just start a new policy adding him on from tonight even though my current one doesn't run out until Saturday and will be overlapping with 2 policies? Is this a really bad idea?